Other TES Games
Both the Arena and Daggerfall games are free now and can be downloaded from the bethesda site. Click on the pictures to go to their links.
There's also a few Daggerfall mods on the UESP page if you're interested.
Good luck finding good copies of Battlespire and Redguard, they're pretty hard to find and are very expensive.
And they're not good games either...