Quick /r/ then I'll ditch the thread.
Trying to remember the name of a manga that was basically a hardcore version of rollerball with mech suits so they can do 100 sanics and beat the shit out of each other. Thought it was by the same guy who did Gunnm but according to MAL it's not.
Gonna post some scenery to pass the time.
Apologies if any of these are non /a/ related, selecting from thumbnails.
>you will never be a teenager chilling with your friends after a school club again.
Air Gear? But it's not mechan.
ANN only knows 4 mecha/sports series:
Battle Angel Alita had an arc which resembles this.