This is a great game, though with one major flaw.
Local co-op on Apple TV seems to be quite broken. We connect two controllers, but we can’t tell it to drop the remote as a player. Neither do the B buttons on the controllers drop a player despite the “B Quit” displayed for those players. Once we start the game, only one controller seems to work.
I could find no support area on the publisher’s or the developer’s web site. So, no way to find out if there is a workaround or even report the issue.
This is really a shame, because Geometry Wars local co-op is (potentially) one of the few really good multiplayer games on the Apple TV.
Robert Fisher about Geometry Wars 3: Dimensions Evolved