The release announcements just seem to be flowing in early this month for interesting games. Evil mansion management and strategy game, MachiaVillain [Steam], is going to release May 16th.
While it doesn't mention Linux in the release announcement trailer shown below, they did specifically state in their Steam announcement that this release date includes Linux support.
I think it looks hilarious, quite an interesting take on a management and strategy game, with it being inspired in parts by Dungeon Keeper, Prison Architect "and all the horror movie clichés".
I look forward to having some guests over for dinner—brains, juicy brains!