| Provider | Microgaming |
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The Rat Pack Slot: Overview
Microgaming released The Rat Pack as a tribute to the legendary Las Vegas entertainers - Frank Sinatra, Dean Martin, Sammy Davis Jr and their circle. Rather than a straight biographical game, they went with an anthropomorphic take: the performers are rats in tuxedos. It sounds absurd, but it works. The reels are set against a stage backdrop with spotlight effects, and the whole thing has a genuine 1960s Rat Pack atmosphere.
The game runs on 5 reels, 4 rows, and 30 paylines. Paylines are adjustable, so you can reduce them below the full 30 if you prefer. Bets start at £0.30 per spin (£0.01 per line on all 30) and go up to £300, which makes this a reasonable option for both casual players and higher stakes. RTP is 96.14%, and variance is medium - you won't see the same swings as a high-volatility title like Thunderstruck II, but wins aren't as frequent as in low-variance games either.
Symbols and Paytable
The five premium symbols are all rat performers: a pianist, three crooners in different coloured suits, and a female duo. Below those sit the standard 10-through-Ace card suits. Nothing revolutionary in the lineup, but the artwork is genuinely charming - the character designs have personality.
Two wild symbols operate in this game, which sets it apart from most slots. The first is the Rat Pack logo wild. It substitutes for all symbols except the scatter and, crucially, doubles any win it contributes to. Five logo wilds pay 5,000x your line bet. The second wild is a standalone 2x multiplier symbol - again substituting for everything except the scatter and doubling wins. Both wilds can appear on any reel, and landing both in a single payline stacks the multiplier effect.
The scatter is a golden vinyl record (some sources describe it as a cymbal - the symbol sits ambiguously between the two). Two scatters anywhere pay 2x your total bet, three pay 4x, four pay 10x, and five pay 100x. The maximum total win is 30,000 coins, equivalent to 100x your total bet.
Free Spins: How the Bonus Works
Three or more scatter symbols trigger the free spins round - and this is where The Rat Pack genuinely differentiates itself from the Microgaming catalogue. The mechanic is unusual enough to be worth understanding before you play.
When the feature begins, the scatters that triggered it stay fixed on the reels. Each spin, those sticky scatters slide down one row. If a new scatter lands during the feature, it also sticks and starts sliding from the top. The round continues until every scatter has slid off the bottom of the reels. There is no fixed spin count - the length of the bonus depends entirely on how many scatters appear and where they land.
During free spins, only scatter symbols pay. The base game paytable does not apply in the feature. This means your expectation in the bonus comes purely from scatter accumulation, not from regular symbol combinations. It is a different experience to the standard free spins bonus - quieter in some ways, but with meaningful potential if multiple scatters stack up simultaneously. Compare this to the straightforward free spins in Avalon or the multiplier-stacking in Immortal Romance - the sticky scatter mechanic here is the more distinctive of the three.
For more Microgaming games with well-developed bonus features, see the Microgaming software page.
Gamble Feature
After any base game win, a gamble option appears. You can skip it and collect, or choose to risk the win. The gamble works on a simple card-guess basis: predict the colour of the next card to double your win, or predict the suit to quadruple it. A wrong guess loses the entire amount.
The gamble feature is optional and entirely straightforward. Whether it adds value depends on your approach - probability-wise, the colour guess is 50/50 and the suit guess is 25% with a 4x return, making both mathematically neutral. The risk is real, though. Use it selectively or not at all.
Mobile and Game Quality
The Rat Pack was built before HTML5 became standard for casino games. It runs on Microgaming's older Flash framework, which means mobile compatibility is limited or absent depending on your casino. Desktop play via a browser that supports the game client works without issues - the animations are smooth, the audio (big band jazz snippets between spins) fits the theme, and load times are short.
If mobile play is important to you, check that your chosen casino supports this title before registering. Some casinos list the game but only serve the desktop version. Games like Lost Vegas or Lucky Leprechaun offer better cross-device compatibility as more recent Microgaming releases.
Who This Game Suits
The Rat Pack works well for players who want a themed slot with character, a distinctive bonus mechanic, and medium variance that does not punish you with long dry spells. The 96.14% RTP is above average for Microgaming's catalogue. The dual-wild setup means base game wins are more frequent than in single-wild slots, and the 2x multiplier activating on both wild types gives the paytable genuine punch.
The unusual free spins mechanic divides opinion. Some players prefer knowing how many spins remain in a bonus - the open-ended sticky scatter format here lacks that clarity. But it also means the bonus can run longer than a fixed-spin round if scatters keep appearing, which creates a different kind of tension.
You can find The Rat Pack at a range of UK casinos. See the casino listings for sites that carry Microgaming's full game library.
Where to Play The Rat Pack
These online casinos carry Microgaming games including The Rat Pack. Read our Donbet review or browse all casino reviews.
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