Tanks Of Liberty is a top-down shooter in the tradition of the brick-walled arcade games of the eighties, with one change that matters: the maps are generated, so nobody can memorize the route to the base. You shoot through walls or around them, collect stars, shields and repair bricks, and hold the bottom of the screen against waves that keep arriving. Two people can take it on together at one keyboard, and co-op here is genuinely harder than solo, because friendly fire and narrow corridors do not get along.