Hm... this game's ok, I guess. While it's framed as a skill/puzzle sort of game, the random spread of the red atoms in the game makes success a crapshoot rather than a test of reflexes. There were a few times where I was soooo close to passing a stage only for a red atom's trajectory to be beyond my cluster of detonated atoms so it dies before it can expand. The upgrade system and the star system also feel more like they're there to pad out the game rather than add anything to it.