For something cheap you can pick up a Dell optiplex 755 for 20.00 & throw linux mint on it
(had to edit winecfg a bit to get rid of stuttering, works great with wine though)
Currently using 755 & arch/i3wm for oldschool runescape & diablo, works great for the money spent lol.
If your looking for something that can be upgraded a little just find a optiplex 990 for around 75.00 & throw a graphics card in down the line
This post was edited by NorthWestern on Jan 23 2018 01:31am