When you first start Flux, you are presented with two paths: Classic Mode and Challenge Mode.

Classic Mode is designed to be completely customizable and competitive. In this mode, a random level is generated based on the settings that you specify. After attaining a good score, you can submit it over the Internet and immediately see how you stack up against the rest of the world.

Challenge Mode offers the appeal that each level with which you are presented can be solved. Everybody playing this mode plays the exact same set of puzzles in the exact same order. The puzzles start out easy, being able to be beaten in one or two clicks. However, they get progressively more difficult as you work your way through a library of more than 50,000 levels.

It is now time to make your first decision: