https://bugs.winehq.org/show_bug.cgi?id=50779
--- Comment #7 from Rafał Mużyło galtgendo@o2.pl --- As I've said, this is about RPGMaker VXAce engine games.
Pretty much all games are affected, but it takes a special one to get to the point of freeze - it needs to be using a lot of extra sound effects (as it seems each *unique* sound effect gets its own thread).
Note: in VXAce (and likely other two ruby makers) filename is (in a way) unique sound effect identifier (well, it's a bit more complicated, but effectively close to that).
Those threads are being released every now and then (not sure about exact condition - seems to be an internal engine implementation detail), but a game using a lot of them is able to overwhelm wine now and run out of address space.