Here's my suggestion for a pattern:

Design Pattern 3 - The Annoying Algorithms
A vertical shoot-em-up, where the enemies are inefficient algorithms. They spew lethal, electrocuting clock cycles at you, which you must dodge at any cost. Taking a risk by throwing your sword at them (I would imagine the player to be immobile or at least slowed during this) will allow you to hit unnecessary overhead off their code. The lighter an algorithm becomes, the more efficiently it will try to shoot you down.

After hitting one enough times, you finally have optimized the algorithm and are ready to move on.

You know, this game idea starts to seem better and better.