If you ever want to install the amazing multiplayer SoulFu medieval-fantasy game from Aaron Bishop (up to 4 players with joysticks & keyboard on a single computer) on your Ubuntu 12.04 (Precise) 64bit, follow the howto below. The most problematic point is that it depends on libjpeg62 compiled in a 32bit version. To install this one (although you're running on 64bit) you need to issue a specific "apt-get install libjpeg62:i386" command (instead of the same version without :i386). Follow the guide here: http://www.playdeb.net/updates/Ubuntu/12.04#how_to_install. Namely, issue the following commands:
Then launch SoulFu to start playing:
wget -q -O- http://archive.getdeb.net/getdeb-archive.key | sudo apt-key add -sudo echo "
deb http://archive.getdeb.net/ubuntu precise-getdeb games" >> /etc/apt/sources.list.d/playdeb.list apt-get update apt-get install soulfu libjpeg62:i38