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Seven of the 16 Booming Games online pokies at iwin33 casino have a Hold and Win round where coins lock and the reels respin. Compare those seven side by side, from Mustang Hold and Win to Bonza Bucks at 12,000x, then see how the other nine Booming slots pay.
Seven of the 16 Booming Games pokies at iwin33 have Hold and Win in the name and a coin round at their centre. When enough coin symbols land, they stay locked in position and the reels respin around them, giving more coins a chance to join. Respin counts, coin values and how each bonus prize is won differ by game, and every game's rules screen sets them out.
Buffalo Hold and Win, Mustang Hold and Win and Buffalo Hold and Win Extreme all play 25 lines on 5×3 reels. The first two share one feature list: Hold and Win with a Grand Bonus, Major Free Spins, Quick Hit Bonuses and Stacked Wilds. Extreme lists a different set: Hold and Win Extreme respins with All Coins prizes of 1x to 5x, a 1,000x Grand Bonus and a Bonus Buy. Mustang tops out at 2,000x and Extreme at 4,000x, while Buffalo Hold and Win's ceiling is in its game info.
Bonza Bucks Hold and Win Extreme 10,000 uses the Extreme coin round on 25 lines too, with 1x to 5x All Coins prizes and a Bonus Buy. Its Grand Bonus is 10,000x, the number in the title, and its max win is 12,000x, the highest of any Booming pokie here. RTP 95.9%.
Ultra Buffalo Hold and Win starts on 20 fixed lines and 5×3 reels, then switches to a 5×8 grid with an Ultra Reel for its coin round. It also has a Buffalo Bonus Wheel and a Wild Buffalo Herd, a 5,000x max win, a 95.6% RTP and an agreed medium-high volatility. 64 Gold Coins Hold and Win begins bigger, on a 5×5 grid with 30 lines. Its coin round can grow with Grid Expand and Boost, Flaming Respins and a Collection Pot are listed alongside, and it reaches 10,000x with a 95.9% RTP.
Mr. Oinkster's Hold and Win adds Piggy Bank and Vault collectors to its coin round, plus free spins with Jumbo Symbols, on 20 lines and 5×3 reels (2,000x, 95.6%).
A clear introduction to the format: 25 lines, 5×3 reels and one goal you can see. Fill all 15 positions with coins and the 1,000x Grand Bonus is yours. Major Free Spins, Quick Hit Bonuses and Stacked Wilds add variety between coin rounds. Max win 2,000x, RTP 96%.
Here the coins have somewhere to go. A Piggy Bank and a Vault act as collectors, and the free spins bring Jumbo Symbols. It plays 20 lines on 5×3 reels with a 2,000x max win and a 95.6% RTP. The optional Oink Bet is explained on the rules screen, including its cost.
The plain buffalo game, without the Extreme, Ultra or PowerGrid changes. It has the same four features as Mustang on 25 lines, with a 95.9% RTP. Booming publishes no max win for it, so check the game info before you play.
Some Booming games list a side option. Buffalo Hold and Win Extreme, Bonza Bucks and Primal Buffalo PowerGrid offer a Bonus Buy, 64 Gold Coins has a Blazing Bet and Mr. Oinkster's an Oink Bet. The rules screen sets out what each one costs before you choose it.
Primal Buffalo PowerGrid locks coins in a different way. Its two PowerGrids hold coins for prizes on any spin, it pays 10,000 ways across reels of 4, 5, 5, 5, 5 and 4 rows, and an Ultra Prize Reel and free spins complete it (2,150x, 96.1%). Cash Pig drops coins into a Piggy Bank on a 30-line, 5×4 grid, and its free spins come with Minor Elimination and Major Upgrade. Review sites agree on high volatility and an 8,000x max win; its 95.1% RTP is the lowest of the 16. Fortune Surge keeps things small, with 5 lines on 3×3 reels, Coin Stack collects, Fortune Surge instant prizes and a Surge Bonus with as many as three locked Collect symbols. It reaches 2,000x, returns 96.1% and is rated medium-high.
Gates of Hercules 10,000 and Tasty Bonanza pay on a 6×5 grid with no lines: 8 or more matching symbols anywhere is a win, and winners disappear so new symbols can fall in. Gates of Hercules has random 2x to 500x multipliers, 15 free spins with a growing multiplier and Boost+, and a 10,000x max win. Tasty Bonanza has random multipliers, bombs, a Candy Jar collector and unlimited free spins, with a 6,500x ceiling and a high volatility rating.
Fish Tales: Double Catch uses 10 lines with Barrel Boost, Cash Collection, Big Net and 10 to 20 free spins, and reaches 10,000x. Howling Wolves Megaways has six reels whose heights change on every spin, with cascades, Howling Wilds and Wolf Pack Multipliers. Gold Gold Gold and Burning Classics play up to 20 lines with stacked symbols, free spins and an optional Gamble, which the rules explain.
RTP for every game and max win for 11 come from Booming's own demo data; Cash Pig's max win and four volatility ratings are where review sites agree. "Shown in game info" means the figure is on the game's own info screen.
| Game | How it pays | Volatility | Max win | RTP | Main feature |
|---|---|---|---|---|---|
 Buffalo Hold and Win | 25 pay lines on 5×3 reels | Shown in game info | Shown in game info | 95.9% | Hold and Win with Grand Bonus, Major Free Spins, Quick Hit Bonuses and Stacked Wilds |
 Buffalo Hold and Win Extreme | 25 pay lines on 5×3 reels | Shown in game info | 4,000x | 95.5% | Hold and Win Extreme coin respins with 1x–5x All Coins prizes, a 1,000x Grand Bonus and Bonus Buy |
 Ultra Buffalo Hold and Win | 20 fixed pay lines on 5×3 reels | Medium-High | 5,000x | 95.6% | Buffalo Bonus Wheel, Wild Buffalo Herd and Ultra Hold and Win on a 5×8 grid with the Ultra Reel |
 Primal Buffalo PowerGrid | 10,000 ways on a 4-5-5-5-5-4 reel grid | Shown in game info | 2,150x | 96.1% | Two PowerGrids lock coins for prizes on any spin, Ultra Prize Reel, and Free Spins with Bonus Buy |
 Mustang Hold and Win | 25 pay lines on 5×3 reels | Shown in game info | 2,000x | 96% | Hold and Win (all 15 coins win the 1,000x Grand Bonus), Major Free Spins, Quick Hit Bonuses and Stacked Wilds |
 Bonza Bucks Hold and Win Extreme 10,000 | 25 pay lines on 5×3 reels | Shown in game info | 12,000x | 95.9% | Hold and Win Extreme coin respins with 1x–5x All Coins prizes, a 10,000x Grand Bonus and Bonus Buy |
 64 Gold Coins Hold and Win | 30 pay lines on 5×5 reels | Shown in game info | 10,000x | 95.9% | Flaming Respins, coin Hold and Win with Grid Expand and Boost, Collection Pot and Blazing Bet |
 Mr. Oinkster's Hold and Win | 20 pay lines on 5×3 reels | Shown in game info | 2,000x | 95.6% | Piggy Bank and Vault collectors, Hold and Win, Free Spins with Jumbo Symbols and Oink Bet |
 Fortune Surge | 5 fixed pay lines on 3×3 reels | Medium-High | 2,000x | 96.1% | Coin Stack collects, Fortune Surge instant prizes and a Surge Bonus with up to three locked Collect symbols |
 Cash Pig | 30 pay lines on 5×4 reels | High | 8,000x | 95.1% | Piggy Bank coin collects and Free Spins with Minor Elimination and Major Upgrade |
 Gold Gold Gold | Up to 20 pay lines on 5×3 reels | Shown in game info | Shown in game info | 96% | Free Spins, stacked symbols and an optional Gamble feature |
 Burning Classics | Up to 20 pay lines on 5×3 reels | Shown in game info | Shown in game info | 96.1% | Free Spins, stacked symbols and an optional Gamble feature |
 Gates of Hercules 10,000 | Scatter pays (8+ anywhere) on a 6×5 grid | Shown in game info | 10,000x | 95.9% | Cascading reels, random 2x–500x multipliers, 15 Free Spins with a growing multiplier and Boost+ |
 Tasty Bonanza | Pays anywhere on a 6×5 grid | High | 6,500x | 96.1% | Cascades with Random Multipliers, Candy Jar collector, bomb symbols and unlimited Free Spins |
 Fish Tales: Double Catch | 10 pay lines on 5×3 reels | Shown in game info | 10,000x | 96.1% | Barrel Boost, Cash Collection and Big Net, plus 10–20 Free Spins with extra-spin and multiplier meters |
 Howling Wolves Megaways | Megaways on 6 reels (ways change every spin) | Shown in game info | Shown in game info | 96% | Cascades with Howling Wilds, Alpha Wolf Spin, Wolf Pack Multipliers and Free Spins |
Game details: Booming Games official game list ↗
RTP is the long-term return a game pays back across a very large number of spins. Booming lets each casino choose from a set of RTP settings, so the figure for one game can vary from site to site. iwin33 uses each Booming game's default setting, the highest on offer.
Booming's official game list has 118 titles, 117 of them slots plus one crash game. Every listed game has a free demo on the studio's own site, and each game's rules give a max win limit as a multiple of the bet. At iwin33, these 16 are part of a lobby of 5,000+ casino games.
iwin33 supports demo play. Try Mustang and Mr. Oinkster's with practice credits to see how locked coins and collectors work before you deposit. The free pokies guide explains demo mode.
PayID deposits from AU$10 arrive instantly, and you can also deposit with eZeeWallet, Apple Pay or Google Pay. Withdrawals go out by PayID, Skrill, Neteller or Payz and reach you within 5 minutes, with an AU$30 minimum. The banking guide and PayID guide cover each method.
New players can take an AU$38 registration bonus and a 40% welcome bonus. A 20% daily first-deposit bonus is on offer every day, and VIP members can claim an AU$888 upgrade VIP bonus. See how to claim the iwin33 no deposit bonus and the rest on the full promotions page.
iwin33 works in the browser on iPhone and Android, so you don't need to download an app.
For more coin respin games, see Booongo or Aristocrat, or browse every studio in the provider guide. To set coin respins against other game types, see online pokies compared.
Buffalo Hold and Win, Buffalo Hold and Win Extreme, Ultra Buffalo Hold and Win, Mustang Hold and Win, Bonza Bucks Hold and Win Extreme 10,000, 64 Gold Coins Hold and Win and Mr. Oinkster's Hold and Win. Primal Buffalo PowerGrid locks coins on two PowerGrids instead, without a Hold and Win round.
Fill all 15 positions with coins during the Hold and Win round. The Grand Bonus is worth 1,000x the bet, and the game's max win is 2,000x.
Buffalo Hold and Win Extreme and Bonza Bucks use Hold and Win Extreme respins, where All Coins prizes of 1x to 5x can appear. Both also list a Bonus Buy. Extreme has a 1,000x Grand Bonus, Bonza Bucks a 10,000x one.
Bonza Bucks Hold and Win Extreme 10,000, at 12,000x. 64 Gold Coins Hold and Win follows at 10,000x and Ultra Buffalo at 5,000x.
Primal Buffalo PowerGrid, Cash Pig, Fortune Surge, Gates of Hercules 10,000, Tasty Bonanza, Fish Tales: Double Catch, Howling Wolves Megaways, Gold Gold Gold and Burning Classics.
From 96.1% down to Cash Pig's 95.1%. iwin33 runs every Booming game on its default setting, the highest available.
Yes. iwin33 supports demo play, so you can learn how the coin rounds work before you deposit.
PayID, Skrill, Neteller and Payz withdrawals land within 5 minutes. The minimum withdrawal is AU$30, and PayID deposits start at AU$10.