The colors hurt the eyes and eventually become hard to look at, the gameplay can be pretty frustrating since it seems more like your trying to avoid falling to your death than collecting stars, and just text saying Tony lived "Happily Ever After" without any solid explanation or anything beyond that just honestly feels a bit disappointing. I feel the first game was a lot better than this second version.
Interesting idea for a game.
And if you get stuck, I'll give you a few combos, don't read if you want to figure it out for yourself, though:
Water+coal=oil
Fire+clay-bricks
Sand+worm=snake
Golem+life=human
Swamp+energy=life
Life+stone=egg