Some important differences: * the first step is explicitly 1 + 2 = 3 (which you mentioned), 1+1 and 2+2 do NOT add * You move all tiles a single space at once,

Some important differences: * the first step is explicitly 1 + 2 = 3 (which you mentioned), 1+1 and 2+2 do NOT add * You move all tiles a single space at once, rather than 'to the edge'. Note tiles only merge when they push together, so an edge or other cards restricting their movement. This is a side effect design decision of single space moving. I do not know if two pairs will merge, e.g. will 3 + 3 + 6 + 6 leave 6 + 12? I suspect it will, but I haven't seen it. * Numbers 1 and 2 both spawn, and there is a 'next number' indicator, although placement still appears random. (A 3 spawned in the tutorial, but I think that was a special case) Overall this leads to a very different feel to the game. Anything else I missed?