Reactoonz 2 app guide

Reactoonz 2 app: what changed from the first game

The sequel looks familiar at first glance: the same grid of colourful aliens, the same rule that five or more touching symbols form a win, and the same drop-down refill after each cluster pays. The difference is in how the features are fed. Instead of one charge path, Reactoonz 2 picks a one-eyed alien at random at the start of each round to act as the fluctuating symbol, and wins involving that alien drive the bonus mechanics.

If you have played the original Reactoonz, expect a similar rhythm but a different focus: in the sequel you watch one symbol type each round rather than every win.

Electric Wilds, the Fluctometer and the Quantumeter

Play’n GO’s description of the game sets out the chain in a few steps:

1. At the start of a round, one of the one-eyed aliens is chosen at random to fluctuate.
2. When that alien is part of a winning cluster, Electric Wilds are created.
3. Each Electric Wild adds to the Fluctometer and charges wilds already on the grid.
4. Electric Wilds also feed the Quantumeter. A partly filled Quantumeter adds Energoon Wilds to the grid.
5. A fully charged Quantumeter unleashes Gargantoon Wilds, the biggest wilds in the game.

The help screen in your app explains how much charge each stage needs and exactly what each wild does once placed. Read it before you play, because the meters are what make the game tick and they are easy to overlook on a small display. Our wild symbol glossary entry explains wilds in general terms.

How Reactoonz 2 looks on iPhone and Android

The square grid is a gift for phones held upright: it fills the full width of the screen, and the stake and spin controls sit beneath it. Knowing which alien is fluctuating matters every round, so it is worth spotting it before you tap spin; the help screen shows how the game marks it.

The two meters are the fiddly part. In portrait they are drawn smaller to fit around the grid, so on compact phones you may prefer to rotate to landscape when you want to check their charge. On tablets and unfolded foldable phones there is room for everything at a comfortable size.

How to start Reactoonz 2 in a casino app

1. Open the app, sign in and confirm your account is fully verified.
2. Search “Reactoonz 2” in the lobby; the original and the sequel usually appear side by side.
3. Tap the game tile and wait for it to load. Check the menu for the paytable and RTP.
4. Set your stake; the app enforces the £5 cap (£2 for 18–24s).
5. Tap spin, then let the cascades and any wild effects complete before the next round.
6. Keep an eye on the net position line and stop when you reach your planned limit.

Login trouble? The casino app login problems page covers password resets, Face ID failures and locked accounts.

RTP and volatility: Reactoonz 2 in pounds

The top published RTP is 96.2%, so the theoretical return is £96.20 for every £100 staked over a very long run. Play’n GO supplies lower versions too, and the version in your app is shown in the rules screen. This top figure is slightly below the original game’s 96.51%.

With high volatility, actual sessions swing much further than those averages. Most spins will return less than you staked, so set your budget first and choose a stake that fits it. Our bankroll management guide suggests simple ways to pace play on a phone.

Reactoonz 2 max win of 5,083×

The maximum is 5,083 times your stake: about £508 at 10p, £1,017 at 20p and £5,083 at £1. Hitting it is extremely rare, and the figure is best understood as a ceiling rather than a target. Any large payout may involve standard verification checks before it reaches your bank.

UK rules applied to Reactoonz 2

All Gambling Commission design rules apply in the UK version. There is no autoplay, so each spin needs a tap, and each one lasts at least 2.5 seconds with no turbo option. Stakes stop at £5 a spin for players aged 25 and over and at £2 for players aged 18 to 24. Feature buy is not available in Great Britain, and a return smaller than your stake is not presented as a win. See UK stake limits on mobile slots for how the caps are applied to your account.

Trying Reactoonz 2 in demo mode

UK casinos can only offer demo play after your age has been checked. Once verified, the demo lets you watch the fluctuating symbol and meters work on your own phone without staking real money. Demo credits are not withdrawable. Our free slots apps page explains the rules on demos in more detail.

Reactoonz 2 vs similar cluster slots

Jammin’ Jars 2 offers a far higher ceiling on a bigger grid, while Star Clusters Megaclusters uses splitting symbols on an expanding grid. Browse more on our Play’n GO mobile slots page.

Pros and cons of the Reactoonz 2 app experience

Where to play Reactoonz 2 on your phone

Search each app before you deposit, because game libraries vary. At 10bet, new UK customers aged 18+ who pick the casino welcome bonus at sign-up and deposit within 7 days get a 100% match up to £25; the bonus has 10x wagering on slots within 3 days and bonus winnings are capped at £1,000 (T&Cs apply). PlayOJO’s welcome offer (18+, new UK customers outside Northern Ireland, T&Cs apply) gives 80 free spins at 10p each on Big Bass Bonanza when you make a first deposit of at least £10, with no wagering on anything they win.

18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set limits. Free, confidential help: National Gambling Helpline 0808 8020 133.