Chain Reaction Hold & Blitz Slot Review

You'd think the biggest threat to 4 million dominoes would be a clumsy cameraman. In 2005, it was a house sparrow 🐦.

The bird got into the hall in Leeuwarden, in the Netherlands, days before the Domino Day record attempt and knocked over about 23,000 tiles. 🤦‍♂️

A pest controller shot it with an air rifle, and the sparrow is now stuffed 🪦 and on show in a Rotterdam museum, perched next to a little pile of dominoes.

Nobody's getting shot over Chain Reaction Hold & Blitz slot from Iron Dog, coz this one actually wants to topple.

Gameplay

Where do I even start with this game's design? It's like a one-dimensional escape from the '90s with crystals and lightning and not much else.

There are 9 boards - each is a 3x1 grid with 1 payline - which all spin per round. The RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate. is 95.2%, volatility is high, and the max multiplier is 12,500x.

The max win is $187,500, with bets running from $0.20 to $15. It's fiat currencies only, but the Japanese Yen isn't accepted.

Wins come from 3 of a kind on a single board. At the bottom of the paytable, the Cherry symbol, Lemon, Orange, and Plum pay 0.1x, 0.2x, 0.3x, and 0.5x, respectively.

The gems do better. Sapphire pays 2x, Ruby 3x, Emerald 5x, and Diamond tops the table at 10x.

Coins are the symbols that count. Each one is a Special Bonus symbol carrying a cash value that can be won in Hold & Blitz. Fill a whole board with them and the feature fires.

The jackpots are static: Mini at 15x, Minor at 50x, Major at 150x, and Mega at 1,000x. The Mini, Minor, Major and Mega Prize symbols pay their tier's value during the Hold & Blitz.

Features

HOLD AND WIN:

Fill any board completely with coin symbols and the Hold & Blitz kicks off on all 9 boards at the same time, with each board running its own round.

Every board that isn't already full gets 3 Respins. All the coins lock in place, and from then on only coins can land. Every other spot shows a Blank Symbol, and the regular paylines are switched off for the round.

Coins here means the Special Bonus symbols, worth 1x, 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x or 12x your bet, plus the 4 Prize symbols.

Any new coin on a board resets that board's Respins to 3, and 3 indicators under each board show how many Respins it has left.

When a board fills up, its Respins end and the Chain Reaction fires. If all 9 boards get filled, there's no Chain Reaction and every win is doubled instead.

Chain Reaction

The whole game is built around this. A filled board triggers it right away, adds 1 to 3 coins to other boards, and puts a random 2x to 5x multiplier on itself.

A coin that arrives this way resets the receiving board's Respins to 3, even if that board had already run out. If those extra coins fill another board, that board fires its own Chain Reaction on the spot.

BUY BONUS AND ANTE BET:

The Buy Bonus costs 70x your bet, takes you straight into Hold & Blitz, and has an RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate. of 95.51%.

The Ante BetAn Ante Bet is an option that costs a percentage of your bet but increases your chances of landing triggering symbols that initiate a feature. adds 50% to your bet and it doubles your chance of hitting Hold & Blitz. The RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate. is 95.17%.

Performance

Ugly and uninspiring though the design might be, at least the game was functional. I didn't have any issues while testing this game.

Maximum Win

Put the max multiplier of 12,500x on the top bet of $15 and you get a max win of $187,500. The minimum bet is $0.20.

Conclusion

Hold & Blitz is where all the money in the game comes from. Inside the round, the cash comes from 3 places: the Coins, the Prize symbols, and the multiplier a full board puts on itself.

There are 27 spots across the bank. Put the top coin on every one of them, give every board the biggest Chain Reaction multiplier and coins alone come to about 1,620x.

So the max multiplier has to come from Prize symbols, mainly the 1,000x Mega, landing on boards that then get a big multiplier, with the all-9-boards doubling on top. That's pretty hectic - I’d have a better shot at going on a date with Sydney Sweeney.

The RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate. is designed for shorter sessions, but the risk vs reward ratio (high volatility vs 12,500x) is in our favor.

The Buy Bonus is the one I'd take. Its price is decent, but its 95.51% RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate. pays back the most per dollar. I'd skip the Ante BetAn Ante Bet is an option that costs a percentage of your bet but increases your chances of landing triggering symbols that initiate a feature.. You pay 50% more per spin at 95.17%, a hair under the base game, so you're playing the same game and burning cash faster.

High-risk players with a real bankroll are who the game is for. Low-risk players and anyone after long, steady sessions should pass, coz the fruit won't keep anyone going.

Slot Details

Game Provider: Iron Dog
Game Type: Video Slots
PaylinesPaylines are preset lines that run across the reels, and when you land matching symbols on them, that will result in a payout. The more paylines, the more ways you can win, but also the higher your bet per spin.: 9
RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate.: 95.2%
Volatility RateSlot games can have low, medium, high, or extremely high volatility rates (or a combination thereof).

The less volatile the game, the more often it should pay out, but the lower the amount, the less the payout, as this is in keeping with the risk you’re taking. Volatility rate should be considered in conjunction with a game’s RTP.: High
Bonus Round: Yes
Progressive: No
Free Rounds: Re-spins
Max Multiplier: 12,500x
Max Win: $187,500
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