On SteamNotes only · this build shipped before we watched the app
Fixed an issue with stairs being unavailable in dwarves and necromancer keepers. If you have started a new game under hotfix 17, you'll have to restart to be able to build stairs. Sorry for that.
KeeperRL v1.0 hotfix 18 is out · KeeperRL build 14459126 · SteamPeaks