I think its a good game!
Really the people below can stfu, the game was fun, it provided a challenge and made you build a strategy on how to best each level. I made it to day 21, without problem. Although the final boss is annoying if you dont build for increased speed. *Hint hint* I liked the variaty of new enemies, so it makes a person revise their plan every few levels. Also if you need to get some health, a bonus item tends to appear after every jump you make. You can also be gentle enough that you make the worm only skin the surface instead of flying into the air.