The thought came to mind after reading a recent post about Baldurs Gate 3 here but it reminded me of the Japense only PSX game Mizzurna Falls where if you don’t perform a certain action early in the game you are prevented from getting a true ending. While this might not be a traditional soft lock because you can still progress to a point it made me wonder none the less.
I understand BG3 might be a hard lock because the game abruptly comes to a close I am not going to get into the semantics. The only other soft locks I can think of are with Pokemon.
Shout out to the fan translation of Mizzurna Falls. An article on the ROMHacking.net website can be found here.
The original Neverwinter Nights, you could kill main story NPCs and lock yourself from progressing. If you saved after this without realizing your mistake because you’re dumb, you have to restart.
Also, the original pre-order Ocarina of Time, if you did the keys on the water temple in the wrong order, it made the temple nearly impossible. Data sleuths have found a way to progress, but 14 year old me spent 20 hours trying to figure it out and quit the game.