May is already turning out to be quite a busy month for Linux gaming. It's now confirmed that the group based role-playing dungeon crawler Arakion: Book One will arrive in Early Access on May 15th.
I'm a huge fan of monster taming RPGs and seeing more of them get released on PC with Linux support is great. Siralim 3 is another that will have a Linux version.
Phoenix Point, the huge new strategy game from Snapshot Games, which includes the legendary developer Julian Gollop (creator of X-COM) is due for a first public beta release really soon.
Hypnospace Outlaw is probably one of the strangest games someone has linked us to recently, it's a '90s internet simulator that will see you hunt down wrongdoers.