Quote:
...Especially the third level of the blue theme is unfinishable.


I don't think with this contest it is very important that a game/level is finishable or has a good performance on slower systems.

I think with this contest counts the game mechanics, the features of the entry and of cause the look and feel.
Think about the 100 lines - that's not much for game programming.
It doesn't matter if there is a not perfect balanced level?!