Welcome to our deep dive on Blocks — the demo, the maths, and whether it earns a spot in your rotation. Developed by THNDR, Blocks arrives with medium low volatility and an RTP of 95.85%. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. Expect a hit frequency around 30%, which sets the rhythm of play. Visually it's wrapped in polished, characterful visuals, with the action running on a 5-reel grid running 40 paylines. So does it deliver? Let's get into it.
Written by Alex Crawford · Last updated: March 2026
Blocks comes to us from THNDR, wrapped in polished, characterful visuals. It runs on 40 paylines across 5 reels with medium low volatility, and an RTP of 95.85%.
Thanks to its medium low variance, wins come often enough to suit casual, lower-risk play. Overall it's a well-rounded slot that knows what it is.
At 95.85%, 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.
Medium-low volatility offers a good balance of regular wins with occasional larger payouts. Expect frequent hits with modest amounts, suitable for casual players who want low-risk entertainment.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
3.0 / 5 — Good
Blocks by THNDR is a solid offering that delivers good entertainment value. The 95.85% RTP combined with medium low volatility creates a well-balanced gaming experience.