There are two modes of play, one which ramps up the difficulty and allows for unlockable modes and "cards". And the game obviously has a lot of intricacies for those willing to seek them out.
In "Progressive mode" there are a few challenges to conquer in each level - in order to unlock more levels/extras - such as completing a level using only one bug. You can turn your bugs into resources which allows you to activate more bugs or use modifiers. All you have to do is make sure that you bugs rule the board.
Requirements:
· OS: Windows XP/Vista/7