Bodycheck is a medieval sports game for PS Vita with no rules against foul play, magic powers, and up to four teams on the pitch at once. It's fully multiplayer too, yes - up to four players locally, or head-to-head across the wider internet.
Punching, scratching, and general unnecessary roughness are all actively encouraged during play. Just remember to score more points than your opponents.
Bodycheck will (finally) launch in Europe on 30 May, 2017 (American build is still in QA, release date TBC).
The official site is over here at BodycheckGame.com.