Nothing fancy so far. The backgrounds, arrangement, and boss are all incomplete; but there's enough there to try out I think.
picked the name solely because I was on the verge of giving up on
GMHTML5 for this kind of fast action game. After finishing Megatank, I
had tried a simple platformer and a Space Harrier style shooter; but
neither ran at an acceptable speed in-browser. (Both will be eventually
be released in EXE format for the same price as Megatank, though.)