Monster Lab by Evoplay is a five-reel slot with 20 fixed paylines and a laboratory theme built around cartoon monsters, glass tubes, gauges and retro-style science graphics. The game uses a 5x4 reel layout, with symbols shown in cylindrical chambers and a paytable that explains the main rules, including symbol values for three, four and five matches.
The feature set includes a Wild symbol, which substitutes for most other symbols and appears on the 1st, 3rd or 5th reel, covering the full reel. A Bonus symbol triggers a bonus game when three or more land, while Scatter symbols activate Free Spins and can award extra spins during the feature. The RTP is listed at 94.3%, with bets ranging from 1 to 1000.
A demo version is available to play for free, giving players a way to learn the mechanics and practice before playing for real money. The interface includes spin, auto spin and max bet controls, plus on-screen win and credit displays for monitoring play.