Supernova Casino Review

The Blue Media firm introduced Supernova Casino in 2016. The website accepts gamblers from all corners of the world, including Australians. You can enjoy this platform from the comfort of your home because its interface is simple and compatible with all mobile platforms.

Its main selling point is the fantastic promotions it provides to new depositors. Furthermore, the casino includes innovations, encryption techniques, and a variety of popular titles. Casino games and pokies are available in instant play layouts.

Players at this venue have an excellent gaming experience as they enjoy the real money pokies and games. Supernova deserves your time and attention if you are an Australian.

Supernova casino logo
  • ⭐ 300% Deposit Bonus
  • ⭐ Code: INVASION300
  • ⭐ No max cashout
  • ⭐ 100% 1st Dep Cashback
Crikey Slots Head Banner
Crikey Slots Head Banner
POS
CASINO
BONUS
MORE INFO
PLAY
1
spinfever casino logo
$500 Casino Bonus

18+ | T&C applies. | SpinFever Casino.

  • 100% Bonus
  • 50 Bonus Spins
  • Gates of Olympus
Exclusive
2
rocket casino logo
20 No Deposit Spins

18+ | T&C applies. | Casino Rocket.

  • Exclusive
  • Aztec Magic Deluxe
  • 100% up to $500
3
leon casino logo
100% up to $500

18+ | T&C applies. | Leon Casino.

  • Slots and Live Casino
  • $20 Min. Deposit
  • Mobile App
4
woo casino logo
100% up to $100

18+ | Terms & conditions apply. | Woo Casino

  • 150 Bonus Spins
  • Wolf Gold
  • Code: WOO
5
bambet casino logo
100% up to $2500

18+ | Terms & conditions apply.

  • Loyalty free spins
  • Reload bonuses and Tournaments
  • $15 Min. Deposit
6
playfina casino logo
100% up to $300

18+ | T&C applies. | Playfina Casino.

  • Up to 200 Spins
  • Wild Cash x9990
  • Code: FIRST
Exclusive
7
21bit casino logo
10 Free Spins on Sign Up

18+ | T&C applies. | 21Bit Casino.

  • $200 Bonus & 50 Spins
  • Aztec Magic Deluxe
  • $10 Minimum Deposit
Exclusive
8
bitkingz casino logo
25 No Deposit Spins

18+ | T&C applies. | Bitkingz Casino

  • Miss Cherry Fruits
  • Code: FS25
  • $1500 Bonus & 100 Spins
Exclusive
9
betonred casino logo
50 No Deposit Spins

18+ | T&C applies.

  • Book of Dead
  • Code: BOD50
  • $225 Bonus & 250 Spins
Exclusive
10
richardcasino casino logo
10 No Deposit Spins

18+ | T&C applies. | Richard Casino.

  • Sunny coin (Gamzix)
  • 100% up to $1000
  • 100 Bonus Spins
Exclusive
11
truefortune casino logo
50 No Deposit Spins

18+ | Terms & conditions apply. | True Fortune Casino.

  • Diamond Dragon
  • 200% up to $2000
  • On First Deposit
Exclusive
12
skycrown casino logo
20 No Deposit Spins

18+ | T&C applies. | SkyCrown Casino.

  • Aloha King Elvis
  • Code: ND20
  • $300 Casino Bonus
Exclusive
13
lovecasino casino logo
400% up to $4,000

18+ | T&C applies. | Love Casino.

  • 125 Bonus Spins
  • Aloha! Cluster Pays
  • Code: ALOHALOVE
Exclusive
14
staycasino casino logo
30 No Deposit Spins

18+ | T&C applies. | Stay Casino.

  • Aloha King Elvis
  • 100% up to $500
  • 100 Bonus Spins
15
luckydreams casino logo
100% up to $500

18+ | Terms & conditions apply. | Lucky Dreams Casino

  • 100 Bonus Spins
  • Wild Cash x9990
  • On first deposit
16
50crowns casino logo
100% up to $700

18+ | T&C applies.

  • 100 Bonus Spins
  • Gold Rush with Johnny Cash
  • Code: CROWNS
Exclusive
17
joocasino casino logo
10 Free Spins on Signup

18+ | T&C applies. | Joo Casino

  • Wolf Treasure
  • $1000 Casino Bonus
  • 50 Bonus Spins
18
lucky31 casino logo
$225 Welcome Bonus

18+ | Terms & conditions apply. | Lucky31 Casino

  • 31 Bonus Spins
  • 60 Second Heist Slot
  • Neo Surf
19
winningdays casino logo
100% up to AU$3000

18+ | T&C applies. | Winning Days Casino

  • 150 Bonus Spins
  • Wolf Treasure
  • Bonus code: WIN
Exclusive
20
slotozen casino logo
20 No Deposit Spins

18+ | T&C applies. | Slotozen Casino.

  • Diamond Hunt
  • $300 Casino Bonus
  • 100 Bonus Spins
21
arlekin casino logo
$6000 Casino Bonus

18+ | Terms & conditions apply. | Arlekin Casino

  • 100% Match Bonus
  • 100 Bonus Spins
  • Elvis Frog In Vegas
22
Wild tornado logo
100% up to $300

18+ | T&C applies. | Wild Tornado Casino

  • 100 Bonus Spins
  • $20 Min. Deposit
  • Sunday Cashback
Exclusive
23
mrsloty casino logo
400% up to $2,000

18+ | T&C applies. | Mr Sloty Casino

  • 120 Bonus Spins
  • Ocean's treasure
  • Code: OCEAN120
Exclusive
24
greatwin casino logo
10 No Deposit Spins

18+ | T&C applies. | Greatwin Casino.

  • It's Shark Time
  • Code: GRT10
  • $500 Bonus + 200 Spins
25
abo casino logo
$5000 Casino Bonus

18+ | T&C applies. | Abo Casino

  • 100% Match Bonus
  • 150 Bonus Spins
  • Wolf Gold
26
westpoint casino logo
$500 Casino Bonus

18+ | T&C applies. | WestPoint Casino.

  • 100% Deposit Match
  • $20 Min. Deposit
  • 10% Weekly Cashback
27
hellspin casino logo
$300 Casino Bonus

18+ | T&C applies. | Hell Spin Casino.

  • 100 Bonus Spins
  • Wild Walker slot
  • 100% 1st Deposit bonus
28
oceanbreeze logo
400% up to $2000

18+ | T&C applies. | Oceanbreeze Casino

  • 50 Bonus Spins
  • Narcos
  • Code: WELCOME1
29
wazamba casino logo
$700 Casino Bonus

18+ | Terms & conditions apply. | Wazamba Casino.

  • 50 Bonus Spins
  • Valhalla Slot
  • 15% Weekly Cashback
30
rolletto casino logo
100% up to $1500

18+ | T&C applies.

  • 10% Cashback
  • Sports betting
  • $1000 Crypto Bonus
Exclusive
31
snatchcasino casino logo
20 No Deposit Spins

18+ | T&C applies. | Snatch Casino.

  • Fruit Machine x25
  • Code: 20FSS
  • 200% up to $1500
Exclusive
32
hazcasino casino logo
10 No Deposit Spins

18+ | T&C applies. | Haz Casino.

  • Dawn of Olympus
  • Code: Olympus10
  • No wagering requirements
33
nationalcasino casino logo
100% up to $500

18+ | T&C applies. | National Casino.

  • 100 Bonus Spins
  • Avalon: The Lost Kingdom
  • $25 Min. Deposit
Exclusive
34
iwildcasino casino logo
20 No Deposit Spins

18+ | T&C applies. | iWildCasino.

  • Fruit Machine x25
  • Code: 20FSS
  • 100% up to $800
Exclusive
35
vegazcasino casino logo
10 No Deposit Spins

18+ | T&C applies. | Vegaz Casino.

  • Hollywoof
  • Code: Holly10
  • No wagering requirements
Exclusive
36
quickwin casino logo
10 No Deposit Spins

18+ | T&C applies.

  • It's Shark Time
  • Code: QWN10
  • $500 Bonus + 200 Spins
37
screamcasino casino logo
$500 Casino Bonus

18+ | T&C applies. | Scream Casino.

  • 100% Bonus
  • 150 Bonus Spins
  • Non Sticky
Exclusive
38
boho casino logo
20 No deposit Spins

18+ | T&C applies. | Boho Casino.

  • Cleopatra's Gems
  • Code: BOHO20
  • $750 Bonus & 100 Spins
39
oshi casino logo
100% up to $1500

18+ | T&C applies. | Oshi Casino.

  • 150 Bonus Spins
  • Aztec Magic Deluxe
  • On first deposit
40
syndicatecasino casino logo
125% Match Bonus

18+ | T&C applies. | Syndicate Casino.

  • Up to $125
  • 25 Bonus Spins
  • Choose your package!
41
run4win casino logo
100% up to $500

18+ | T&C applies. | Run4Win Casino.

  • 100 Bonus Spins
  • Elvis Frog in Vegas
  • Up to 1.3k Cashback
42
freshbet casino logo
100% up to $500

18+ | T&C applies. | Freshbet Casino.

  • 155% Crypto Bonus
  • 10% Loyalty Bonus
  • Sports betting
Exclusive
43
voozaza casino logo
20 No Deposit Spins

18+ | T&C applies. | VooZaZa Casino.

  • Majestic King
  • Code: CRIKEY20
  • 200% up to $500
Exclusive
44
icebet casino logo
10 No Deposit Spins

18+ | Terms & conditions apply. | IceBet Casino.

  • Bastet and Cats
  • Code: ZAMSINO
  • 125% up to $400
45
greenspin logo
150 Wager-Free Spins

18+ | T&C applies. | GreenSpin.Bet Casino.

  • 100% Bonus
  • Up to $200
  • Code: GREENZERO
Exclusive
46
luckyelf casino logo
20 No Deposit Spins

18+ | T&C applies.| Lucky Elf Casino.

  • Dig Dig Digger
  • Code: LUCKYGAME20
  • 100% up to $100
47
dazard casino logo
120% Match Bonus

18+ | T&C applies. | Dazard Casino.

  • Up to $600
  • 100 Bonus Spins
  • CODE: DZ120
48
voodoocasino casino logo
100% up to $375

18+ | T&C applies. | Voodoo Casino.

  • 100 Bonus Spins
  • Hit The Route
  • Lucky Lady Moon
Exclusive
49
LevelUp casino logo
25 No Deposit Spins

18+ | T&C applies. | Level Up Casino

  • Gold Rush with Johnny Cash
  • Code: CASH
  • $400 Casino Bonus
Exclusive
50
stelario casino logo
10 No Deposit Spins

18+ | T&C applies. | Stelario Casino.

  • Sugar Rush
  • Code: ZAMSINO
  • 125% up to $450
Exclusive
51
betandplay casino logo
20 No Deposit Spins

18+ | T&C applies. | BetandPlay Casino.

  • Book of Fallen
  • Code: ZM20
  • 100% up to $500
52
slotspalace casino logo
$750 Casino Bonus

18+ | T&C applies. | SlotsPalace Casino.

  • 100% Match Bonus
  • Weekly Cashbacks
  • PayID
53
evolvecasino casino logo
$500 Casino Bonus

18+ | T&C applies | Evolve Casino.

  • 100% Match Bonus
  • 25 Bonus Spins
  • Mega mask
54
goldencrown casino logo
$10,000 Casino Bonus

18+ | Terms & conditions apply. | Golden Crown Casino.

  • 100 Bonus Spins
  • 100% Match Bonus
  • Code: GC100
Exclusive
55
universalslots casino logo
20 No Deposit Spins

18+ | T&C applies. | Universal Slots Casino

  • London Hunter
  • Code: UNIVERSALFREE
  • $150 Casino Bonus
Exclusive
56
katsubet casino logo
30 No Deposit Spins

18+ | T&C applies. | Katsubet Casino

  • Hawaii Cocktails
  • Daily Cashback
  • Interac
Exclusive
57
shazam casino logo
250% Casino Bonus

18+ | T&C applies. | Shazam Casino

  • Up to $1000
  • On first deposit
  • $25 Minimum Deposit
58
cobra casino logo
100% up to $2000

18+ | Terms & conditions apply. | Cobra Casino

  • 250 Bonus Spins
  • Aloha King Elvis
  • Book of cats
59
pirateplay casino logo
$500 Casino Bonus

18+ | T&C applies. | Pirateplay Casino.

  • 100% Bonus
  • Wager-Free Lootboxes
  • 24/7 Live Support
60
bo vegas casino logo
30 No Deposit Spins

18+ | Terms & conditions apply. | Bo Vegas Casino.

  • Miami Jackpots
  • Code: 30GIRLS
  • Up to 300% 1st Deposit
61
divasluck logo
$1000 Casino-Bonus

18+ | Terms & conditions apply. | Divas Casino

  • 100% Bonus
  • On first deposit
  • Up to $2000 Cashback
Exclusive
62
king billy logo
50 No Deposit Spins

18+ | T&C applies. | King Billy Casino

  • Book of Pyramids
  • $500 Bonus & 100 Spins
  • Book of King Billy
63
luckofspins casino logo
300% Casino Bonus

18+ | T&C applies. | Luck of Spins Casino.

  • Up to $1200
  • 500% Daily Crypto Bonus
  • Cashback Offers
64
blackmagic casino logo
400% Casino Bonus

18+ | T&C applies. | Black Magic Casino.

  • Up to $1000
  • Code: WELCOME
  • On First Deposit
65
cosmic casino logo
100% up to $800

18+ | Terms & conditions apply. | CosmicSlot Casino.

  • 100 Bonus Spins
  • Water Tiger
  • $32 Min. Deposit
66
luckytiger caisno logo
250% Casino Bonus

18+ | T&C applies. | Lucky Tiger Casino

  • Up to $1000
  • On first deposit
  • $25 Minimum Deposit
67
4kasino casino logo
120% Casino Bonus

18+ | Terms & conditions apply. | 4Kasino Casino

  • Up to $1000
  • Daily Cashback
  • 500% Crypto bonus
68
dublinbet casino logo
$250 Casino Bonus

18+ | Terms & conditions apply. | Dublin Bet Casino

  • 25 Bonus Spins
  • 90K Yeti Gigablox
  • 100% Match Bonus
Exclusive
69
zeslots casino logo
$5 No Deposit Cash

18+ | T&C applies. | ZeSlots Casino.

  • Code: 5free
  • 200% Deposit Bonus
  • 30% Daily Cashback
70
playamo logo
100% up to $500

18+ | T&C applies. | PlayAmo Casino

  • 100 Bonus Spins
  • Elvis Frog in Vegas
  • Code: FIRSTDEP
71
ohmyspins casino logo
$750 Casino Bonus

18+ | T&C applies. | OhMySpins Casino

  • 200 Bonus Spins
  • Cashback Offers
  • 100% Bonus
72
slotman casino logo
100% up to $1000

18+ | T&C applies. | Slotman Casino

  • 60 Bonus Spins
  • Slotman Milion
  • Promo Code: SM100
73
heavychips casino
$200 Casino Bonus

18+ | T&C applies. | Heavy Chips Casino

  • 200% Match Bonus
  • 20% Cashback Offers
  • Daily Jackpots
74
mondcasino casino logo
$200 Casino Bonus

18+ | T&C applies.| Mond Casino.

  • 100% Bonus
  • Code: Mond130
  • Loyalty Cashback
75
getslots casino logo
$1.250 Casino Bonus

18+ | Terms & conditions apply. | GetSlots Casino

  • 155 free spins
  • Sword and The Grail
  • $20 Minimum deposit
76
slotum casino logo
$250 Casino Bonus

18+ | T&C applies. | Slotum Casino

  • 100 Bonus Spins
  • Instant Withdrawal
  • 100% Bonus
77
redstag logo
$10 Free on Registration

18+ | Terms & conditions apply. | Red Stag Casino

  • Code: TENNER
  • 275% up to $500
  • 100 Bonus Spins
78
fair go casino logo
$5 Free

18+ | Terms & conditions apply. | Fair GO Casino

  • No deposit
  • Code: FAIRGO5
  • Bitcoin
79
twoup logo
$25 Free Chip

18+ | T&C applies. | TwoUp Casino

  • On Registration
  • Code: 25CHESS
  • 250% Deposit Bonus
80
uptown pokies logo
$20 Free Casino

18+ | Terms & conditions apply. | Uptown Pokies Casino

  • No Deposit
  • Code: POKIES20FREE
  • 200% Match Bonus
81
parimatch casino logo
$400 Casino Bonus

18+ | Terms & conditions apply. | Parimatch Casino

  • 5% Cashback
  • 150% Bonus
  • Code: PLAY150
82
7bit casino logo
$100 Casino Bonus

18+ | T&C applies. | 7Bit Casino

  • 100 Bonus Spins
  • Wolf Treasure
  • 100% Bonus
83
ogcasino logo
400% Deposit Bonus

18+ | T&C applies. | OG Casino

  • Multiple Bonuses
  • 20% Cashback Offer
  • $10 Min. Deposit
84
spinpug logo
500% Deposit Bonus

18+ | T&C applies. | Spin Pug Casino

  • Up to $100
  • $10 Minimum Deposit
  • 20% Cashback Offers
85
aussieplay casino logo
260% Casino Bonus

18+ | Terms & conditions apply. | Aussieplay Casino

  • 40 Bonus Spins
  • Tarot Destiny
  • Code: MAGICSPHERE
86
elroyale casino logo
250% Casino Bonus

18+ | Terms & conditions apply. | El Royale Casino.

  • Up to $2500
  • Code: LOVESCENT250
  • Min. Deposit $10
87
Supernova casino logo
300% Deposit Bonus

18+ | Terms & conditions apply. | Supernova Casino.

  • Code: INVASION300
  • No max cashout
  • 100% 1st Dep Cashback
88
lasatlantis casino logo
250% Casino Bonus

18+ | Terms & conditions apply. | Las Atlantis Casino.

  • Up to $2500
  • Code: LOVESCENT250
  • Crypto Deposits
89
irish luck casino logo
$15 Free Chip

18+ | Terms & conditions apply. | Irish Luck Casino.

  • On Registration
  • Code: FORTUNE275
  • 275% Deposit Bonus
90
spinsamba logo
$200 Casino Bonus

18+ | T&C applies. | Spin Samba Casino.

  • 40 free spins
  • Code: WELCOME
  • 100% bonus
91
bitstarz logo
$2000 Casino Bonus

18+ | T&C applies. | BitStarz Casino

  • 20 free spins
  • No deposit bonus
  • 180 bonus spins
92
trueflip logo
$300 Casino Bonus

18+ | T&C applies. | True Flip Casino.

  • 85 free spins
  • Book of Dead
  • 100% bonus
93
spinaru logo
$200 Casino Bonus

18+ | T&C applies. | Spinaru Casino.

  • $10 Min. Deposit
  • 100% Match Bonus
  • 20% Cashback Offer
94
richpalms logo
250% Casino Bonus

18+ | T&C applies. | Rich Palms Casino.

  • Up to $1000
  • On first deposit
  • $25 Minimum Deposit
95
wildblaster logo
100% up to $150

18+ | T&C applies.

  • 100 Bonus Spins
  • Book of Dead
  • 10% Monthly Cashback
96
freespin logo
$25 Free Chip

18+ | T&C applies.

  • On Registration
  • Code: SPINNER25
  • 250% Deposit Bonus
97
sticky wilds logo
$25 Risk Free

18+ | T&C applies.

  • Rick and Morty Megaways™
  • Jackpot games
  • Leveling system
98
winz casino logo
500% Deposit Bonus

18+ | T&C applies.

  • up to $100
  • $10 Minimum Deposit
  • 20% Cashback Offer
99
betspalace casino logo
500% Deposit Bonus

18+ | T&C applies.

  • up to $100
  • $10 Minimum Deposit
  • 20% Cashback Offer
100
mywin24 casino
400% Deposit Bonus

18+ | T&C applies.

  • Multiple Bonuses
  • 20% Cashback Offer
  • $10 Min. Deposit
101
vipspel casino
$300 Casino Bonus

18+ | T&C applies.

  • $10 Min Deposit
  • 100% Bonus
  • Live Casino Cashback
102
paradisewin casino
$300 Casino Bonus

18+ | T&C applies.

  • $10 Minimum Deposit
  • 100% Match Bonus
  • 20% Cashback Offer
103
vipstakes casino
400% Deposit Bonus

18+ | T&C applies.

  • Multiple Bonuses
  • 20% Cashback Offer
  • $10 Min. Deposit
104
betmaster casino
$200 Casino Bonus

18+ | T&C applies.

  • 10 free spins
  • Starburst
  • 100% bonus
105
casinoin casino
$200 Casino Bonus

18+ | T&C applies.

  • 15 free spins
  • Book of Dead
  • 100% bonus
106
slototop logo
$300 Casino Bonus

18+ | T&C applies.

  • 100% Match Bonus
  • 60 Bonus Spins
  • 10% Cashback Offer
107
slottyway casino
$1000 Casino Bonus

18+ | T&C applies.

  • 60 free spins
  • Live casino
  • 200% bonus
108
spinamba casino
$1000 Casino Bonus

18+ | T&C applies.

  • 50 free spins
  • Starburst
  • 50% bonus
109
allright casino
$1000 Casino Bonus

18+ | T&C applies.

  • 50 free spins
  • Wild Wild West
  • 100% bonus
110
luckybird casino
$500 Casino Bonus

18+ | T&C applies.

  • 50 free spins
  • Wild Wild West
  • 100% bonus
111
slottica casino logo
$200 Casino Bonus

18+ | Terms & conditions apply.

  • 50 free spins
  • Starburst
  • 100% bonus
112
fastpay logo
10% Weekly Cashback

18+ | T&C applies.| Fastpay Casino.

  • $150 Casino Bonus
  • 100 Bonus Spins
  • 100% Match Bonus
Exclusive
113
allwins casino logo
69 Free Spins on Signup

18+ | Terms & conditions apply.

  • Betsoft - Lava Gold
  • Code: CRIKEY
  • 250% Bonus + 25 Extra Spins
114
spacewin casino logo
300% Casino bonus

18+ | T&C applies. | SpaceWin Casino.

  • Up to $450
  • 100 Free Spins
  • Sweet Bonanza

Security and Licensing

The operator provides a secure gambling environment by utilizing authentication techniques to safeguard its players’ personal and bank details. This club also has fair gameplay thanks to the presence of a Random Number Generator (RNG). The Curacao Gambling Commission also licenses the gambling venue, making it a legal platform.

supernova online casino screenshot

Responsible Gambling

Many Australian gamblers go to gambling establishments for fun and can control their gambling habits, but a small percentage face problems. Remember the following key points to keep your betting habit going. Gambling is for entertainment only; limit your wagering, stop chasing losses, and consider the valuable time you spend on the site.

Casino Games

Rival Gaming is in charge of Supernova titles. The platform’s games are classified as pokies, table games, specialty games, and video poker.

Supernova has over 100 pokies in its catalogue. Panda Party, Dublin Your Dough, Pistols Midas Touch, and Wrath of Medusa are a few examples.

Table game enthusiasts will enjoy titles such as American Roulette, Blackjack, Ride them Poker, European Roulette, and Baccarat. Joker Poker, Double Joker, Multi-Hand Aces and Faces, Deuces Wild, and Multi-Hand Deuces are among the exciting games in the Video Poker collection.

There is also a category of specialty games. One Million Reels BC, Diamond Rhino Jackpot, and Major Moolah are among the titles available. Several titles are free, but you must first log into your casino account to access them.

Bonuses and Promotions

New Supernova Casino members receive a 250% pokie bonus on their first two deposits and a 300% pokie bonus on their third deposit. You can also get a 125% card bonus on your first three deposits if you use the ‘NEBULA125’ code or a 75% Roulette offer on your first two deposits if you use the ‘COSMOS75’ code.

The wagering conditions for the pokie perks are 40x, while the wagers for the cards are 45x. Other promotions obtainable at Supernova Casino include updated monthly and daily specials.

Payment Methods

Supernova online gambling is based on popular deposit and withdrawal methods such as credit cards and electronic wallets. A minimum deposit of A$25 is required to load your account. The promise of funds is completed quickly and at no cost.

The casino’s minimum and maximum payouts are A$100 and A$2,000, respectively. There are no withdrawal fees, and average cashout times range from 3 to 7 days.

Euros, Australian dollars, US dollars, British pounds sterling, and other currencies are accepted on the site.

Mobile Gaming

A large percentage of people in today’s world own a smartphone. The Supernova venue provides customers with thrilling gameplay on all mobile and desktop devices. Those who enjoy spending time on the go will find the helpful app. It is simple to download and configure the app on your mobile devices.

Customer Support

Customer satisfaction boosts potential growth, and Supernova does it right by assisting customers via live chat or phone. The support staff is well-trained, friendly, and fluent in French and English. You will receive prompt and professional responses in any method you use to reach the support team.

supernova casino games screenshot
Author: . Erik King is a widely recognized online casino expert and author on Crikeyslots.

LinkedinTwitter