Mecha fighting each other. Again. Why do we never see these mechanical behemoths hugging it out or discussing their problems like reasonable adults? I suppose the main problem there would be that most of those things seem to be piloted by emotionally unstable teenagers.
Mobile Suit Gundam: Battle Operation has a very long name, but more importantly it's a free online 6 vs. 6 mecha battering game. Sliding about, bumping into other mecha, wrestling moves, it's got the lot. It goes live in Japan this June on PSN.