xpipeman
Patching the game xpipeman (version 1.5) for compiling and running on ubuntu 20.x/22.x
Ps: I found that actually it has been already patched during the years. So, alternatively, for another set of patches (xpipeman-1.5nb6) you can grab them at:
https://pkgsrc.se/games/xpipeman => http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/games/xpipeman/patches
or https://github.com/NetBSD/pkgsrc/tree/trunk/games/xpipeman/patches
Those patches although coming from netbsd are ok for linux too