I'm not sure how weighting one or two sides would consistently produce more 7s if it did, I think other posters would be correct: wouldn't we all realize that going darkside is the way to play? Other posts have speculated about the dice having weighted sides. It seems to me that the rounded dice prevent this scenario. 3 points of contact can always create a stable position this is why tripods are what they are. From a physics point of view, even inside a cylindrical case, a die could conceivably come to rest with 2 corners against the glass and a flat edge on the 'table' surface. My thought is that they are rounded on the edges and corners to avoid a stuck-dice/no-roll outcome. Some posters talk about the shape of the dice. On the evidentiary side, here are my observations: I've read a lot of posts here that raise that suspicion however, anecdotally, I've probably had more success on those machines long-term than I have at actual tables. I'm wondering if anyone here is an engineer (mechanical or software or the like) or similar, who feels there is solid evidence that bubble craps is rigged. TL DR : wondering what, if any, solid (non-anecdotal) evidence you have regarding possible 'rigging' of bubble craps (specifically Aruze-large red foam dice)