This is a fun game with really nice (horrible) visuals, but could you store the high score for each difficulty? It would give a reason to play each difficulty level :)
Thank you for the feedback, glad you liked it!
So the high score is only for recording how long you survive in survival, while the different difficulties are "won" after 60 seconds. Are you thinking like a record of how long you survived them, or a "survived" if you completed the level? I'll definitely keep that in mind for a later revision!