[kragen]

xkobo in particular is a twitchy 2-D bullet-hell shooter, and the current version of it (kobodeluxe) is built with SDL and supports fullscreen mode. But I'm pretty sure xkobo did run in a window. Certainly the other games there I remember (xjewel, xgalaga, etc.) did.

I'm not familiar with Loki's work at all, though the name seems familiar.

I think the removed-code-paths thing is mostly an issue with libc5, isn't it?

I ran into a problem with really old code paths in August when I tried to compile PFE 0.9.14 (a Forth implementation, not a game) from 01995; it was trying to call `uselib`, which I think has never existed on amd64.

FWIW `ldd` reported that xkobo had successfully mapped "linux-gate.so.1 (0xf7f3c000)" (with no filename); as I understand it, this is the vDSO that replaced the vsyscall mechanism, so at least for stuff built for Debian Slink I don't think that problem in particular will occur.