move A/D · jump W / Space · dash double-tap A/D
kunai left-click · grapple right-click · reel W/S
hold into a wall to slide · jump off it to wall-jump · dash into walls to ricochet
grapple a ball to reel it in, swing it, right-click again to throw
2–4 ninjas per lobby · knock rivals into spikes · grab power-ups
or switch the lobby to zero-g football: 1v1, 2v2 or a 3-way free-for-all