@uscools On the level-select screen next to the levels, there are some yellow hexes that appear when you complete regular levels. Click those to play the extra levels.
Liked the game, but I must agree with most other comments; it wouldn't hurt with a few more challenging levels. The level with the car was awesome :)
Also it'd be great if it was possible to change weapon on num pad 1,2,3,4
 "Hexologic"){kind=icon}
 "DUMO"){kind=icon}
 "Bloopers 2"){kind=icon}