The average house edge each crypto casino actually runs, computed from the RTP builds it picked for hundreds of slots. Lowest edge first, no pay-to-rank.
House edge is 100% minus RTP. We measure the RTP build each operator serves for every slot in our catalogue (snapshot 2026-08-11) and average the implied edge across titles — only casinos with at least 20 measured games are ranked. Lower is better for the player.
| Casino | Avg measured edge | Games measured |
|---|---|---|
| Stake | 3.64% | 329 |
| Duelbits | 3.67% | 272 |
| Rainbet | 3.68% | 315 |
| Shuffle | 3.69% | 286 |
| BC.GAME | 3.73% | 218 |
| Gamdom | 3.74% | 205 |
The same title can be priced differently by operator — widest spreads are listed in the RTP builds report.
Between Stake at 3.64% and Gamdom at 3.74%, the measured gap is 0.09 percentage points across 6 operators (average 271 titles measured each). At casual stakes that gap is pocket change; at the volumes our flow tracker records daily, 0.1 pp of edge compounds into a real divergence in expected loss. Two caveats before you switch casinos over it: the build a slot serves can be jurisdiction- or lobby-dependent, so your session may not see the build we sampled; and a lower average edge says nothing about volatility — a 99% RTP high-variance game still eats bankrolls in streaks. Use it as one input next to the review scores, not as a verdict.
Why we publish the build rather than the marketing RTP: operators advertise a game's theoretical return, but the build actually served decides your expected loss, and it varies per casino. Measuring it is the only way the number on this page could exist at all — a self-reported average would just be the flyer again. The snapshot date above is when we last walked the catalogue; new titles and quiet build changes appear on refresh, and history lands in the RTP builds report as it accumulates.