Grime

A deadly, all-consuming mold has emerged from the polluted swamp, spawned from toxic chemical waste, and engulfing everything in its path with venomous grime. Go forth in your herbicide-spewing Herbmobile, and destroy the mold colonies which are threatening the town of Spudville. Similar in style to Centipede and its likes, but distinct in some game mechanics. Your vehicle can move throughout the entire playing field, shoot in 4 directions, and toggle an auto-fire mode. Battle the expanding patches of grime, the mutated wildlife, and the spores that continuously deposit new colonies of mold.