You know what, we need to get rid of undercombos period. It's an archaic function way back before all this cool stuff was added. Either it gets it's own property, or maybe it can just use the next combo feature, although it might be limiting. Or, maybe we should just have it so slash tiles just go to the next combo. Same for movable blocks.

The only problem is that now there is the duplication of all sorts of tiles and combos. If this was a platform game, it would be a problem and I would suggest scrapping combos alltogether and instead opt to have graphics and combos seperate. For that, it would make it so one tile would only need to be addressed once, but the downside is that every screen would have to be custom comboed per tile, which would take forever.