MEDIAEVAL SIEGE TRENCH
Trench is an indoor combat game of assassination, preceded by the building of opposing fortified positions. Think bedsheets, binliner walls, umbrella turrets, garden cane frameworks and substantial duct tape + whatever armchairs, desks, beds etc the large room already had.
Mediaeval Siege Trench does full justice to the above engineering projects (e.g. 3 hours construction time with each team providing a Logistics Deck, a Top-Level Master in DefArch and whatever insane amount of spare curtains, pre-built fireports/tanks/siege towers/yadda yadda) consequently causing impenetrability until some solid direct hits and grappling-hook pulls open up the defenses. Surprisingly, given the firepower behind each fort, this game seems often to be won by charges across no man's land with LARP swords, at least once the grappling hooks and siege towers have taken sufficient toll.
Rules for Trench
List of no-no's for any Trench-type game
Pirate Trench 04 was borderline-mediaeval siege...