To those not in the know, a 90s rts god game called 'Dungeon Keeper' got a full engine rewrite with KeeperFX. What started out as a simple engine mod kept moving more of the engine to newer technology. As of ~2 weeks ago all ASM code is gone in this commit:
https://github.com/dkfans/keeperfx/commit/38d725d17d9cdc4f07f541fcffc9047ed56942a5

The code base is now totally portable to other platforms. There is talk of a Linux port and an OpenGL renderer for KeeperFX coming soon.
https://keeperfx.net/