Curious what Happy Cookie actually feels like to play? Here's our full, no-fluff take. Developed by Onlyplay, Happy Cookie arrives with medium variance and 95.8% RTP. Originally released in 2022, it has aged well. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. Visually it's leaning into a christmas aesthetic, with the action running on a 5-reel grid running 10 paylines. The full verdict is below.
Written by Sarah Mitchell · Last updated: February 2026
This slot, Happy Cookie, is the work of Onlyplay, dressed up with a christmas theme. It runs on 5 reels and 10 paylines with a medium-variance maths model, and an RTP of 95.8%.
Where Happy Cookie earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium volatility strikes a middle ground that should suit most playing styles. Overall it's a well-rounded slot that knows what it is.
At 95.8%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
A balanced volatility profile with a mix of smaller frequent wins and occasional larger bonus payouts. Suitable for players who want steady action without extreme swings.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Happy Cookie features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
Happy Cookie by Onlyplay is a solid offering that delivers good entertainment value. The 95.8% RTP combined with medium volatility creates a well-balanced gaming experience.