Oh dear. It’s a shame that Batman: Arkham Knight [official site] has been such a mess on PC because it is a pretty fun game. But it was pulled from sale the day after launching due to its awful performance, took five months to relaunch, and was still a bit wonky after that. That’ll sour impressions a touch. Now Arkham Knight’s planned Mac and Linux versions are cancelled. Even though Batman himself digs *nix! Oh dear.