GOG has some new deals live at their site.
Bio Menace is a new release on GOG and you can get it for free. Requires a free GOG account.
Bethesda Weekend Promo
Quake: The Offering $2.49
Quake II: Quad Damage $2.49
Quake III: Gold $5
Fallout 2 $2.49
Fallout Tactics $2.49
The Ultimate Doom $1.49
Doom II + Final Doom $2.49
Wolfenstein 3D + Spear of Destiny $2.49
Return to Castle Wolfenstein $2.49
An Elder Scrolls Legend: Battlespire $2
The Elder Scrolls Adventures: Redguard $2
The Elder Scrolls III: Morrowind GOTY Edition $6.69