Free single-player set-ups of RuneScape and World of Warcraft

World of Warcraft Wrath of the Lich King (WotLK), legit old-school (not newer Battle.net Classic)

You'll have to find your own client files

Windows

Linux

FreeBSD

2004 version of RuneScape

Windows

Linux

FreeBSD

Play Online! (no server set-up)

2009 version of RuneScape

Windows

Linux

FreeBSD

Play Online! (no server set-up)