Actually not just great, super amazing and really fun, this could probably sell super well on like steam or something if you add multiplayer (like local co-op) and a system that ensures that you don't play the same levels over and over again but you instead play through randomly generated maps instead. I also found a nice strategy, i always start by combining stone + air = sand, sand + fire = glas, glas + fire = bottle, stone + wood = dirt, bottle + dirt = terranium, terranium + water = flower, flower + water = water lily and then i just make a lightning and a sawdust or so.