Well...neither Souls nor Torment are really weird, I guess. Unique and puzzling to an extent, sure, but still pretty conventional in many aspects. Torment is a DnD game after all, Planescape is an established setting. Souls may seem weird, but its trial and error system is actually very old, it's just been giving a bit of an overhaul. It's an aRPG to its core.
They are really unique games withing established boundaries, for the most part.
...
For weirdest games...dunno, most flash games I've played were weird.
Sven is a win, hahah.
As for other stuff...
Shower With Your Dad Simulator is fucking weird.