A little less strange may be Gridrunner, although it's hard to say when there's no instructions to tell you what's going on. However, it seemed safe to assume that I'd better start destroying something before IT destroyed me. The screen is covered by a red grid, along the top of which moves a blue wormlike 'something' - presumably the enemy. It progresses across the screen, then down a line, and so on. But as each part of the 'something' is hit, it starts flapping about and moving much faster than before. Interesting - I can't wait to read the instructions!
GRIDRUNNER from Quicksilva