Two forts stand on a desk, built from erasers, books, rulers, pencil cases and tape. Each one hides a paper king and queen. Take turns firing at the other fort. A royal is out when its health runs out or it falls off the desk; take out both of theirs to win.
Everything has real physics. Pieces topple, crack and fall, tape holds them together until it snaps, and a good shot at the right block brings a whole wall down.
Build your own fort piece by piece, turn and stand up pieces, and save the designs you like. Win battles for skill points and spend them on an evolution tree for each weapon: pencils that never run out, eraser shots that knock walls over, and ink that splashes and blows things apart. Play the eight-desk campaign, a quick battle against the computer, or a friend on their own phone.