It is a great game. Lovely mechanic.
However I couldn't beat level 0 due to a horrible bug that freeze the game :(
Really sad that it hampers the game....
When you keep a 1-up at your mouse, and when you die. The 1-up is used and you restart the level and it freezes.
How can I see the level -1 ? Couldn't figure it out until this bug just made me stop playing ^^'