http://bugs.winehq.org/show_bug.cgi?id=23516
--- Comment #26 from Dan Kegel dank@kegel.com 2010-12-22 10:04:18 CST --- Run the game once for a couple minutes, save the output of lsof. Keep running it for another few minutes, save the output of lsof again. Find files that are in the second log but not the first.
(BTW, wine is what's raising the soft ulimit as far as the hard limit allows. The windows app knows nothing about unixy things like that.)