NanoPath is a pretty original puzzle game that sounds unnecessarily complicated, and about as interesting as watching someone else watching paint dry (yeah, we're meta...), but it's actually based around an interesting mechanic.
Long story short, if you bunk off before the end of the dull instruction segment you may miss out on something a bit special.
The game is simple: you must guide a nano machine (SNAAAAAAAAAAAKE!) through a series of mazes by plotting paths in advance. It's all about angles, creating them, adjusting them, and getting really frustrated when your grand plan collapses underneath itself.
The controls are a bit clumsy, and you may feel like walking away after five or so minutes, but we enjoyed it.
Give it a bash.