Old-school shooter fans rejoice, because GOG have discounted loads of vintage FPS titles in their midweek sale.
Aliens Versus Predator classis is only £1.99. As is SIN Gold, UT 2004, SHOGO: Mobile Armour Division and Rise Of The Triad (if you didn't get it for free yesterday).
It really brings back memories, especially SIN and SHOGO. Thanks for the tip, gooner!