One nice thing about digital sales is that no one ends up injured, arrested, or killed. If you want The Witcher 3 half-price, hey, don't sweat it: GOG's Thanksgiving-y sale lives entirely inside computers, so all shall be well as long as you don't accidentally sit on your laptop. I'm not sure why it's named the 'Only On GOG.com' sale when TW3 is the fanciest bargain there and is definitely not, you know, only on GOG, but hey! Also on sale: old Star Trek, Dungeons & Dragons, and Warhammer games.
The Witcher 3 is £24.99, and it's probably the best RPG of the past few years. The Witcher 2 is £1.99 and is also pretty great, but less so. CD Projekt's first Witcher is only £0.99 and it... it's a lot wonkier, but does different, more classical RPG things, and I still dig it.
Over in Bundle Corner, GOG have packaged some Star Trek, D&D, and Warhammer games into lots. You can buy individual games at a discount, but the discount ramps up as you buy more of each lot.
Over here you'll find Star Trek's Starfleet Academy, Starfleet Command Gold Edition, 25th Anniversary, and Judgment Rites for as little as £6.36 for the lot. This one has Shadow of the Horned Rat, 40k: Rites of War, 40k: Chaos Gate, and Final Liberation: Epic 40k. This lump of D&D includes Baldur's Gate, Icewind Dale, and Planescape: Torment, while this D&D blast has a great many older games, such as the Eye of the Beholder trilogy.
One might suggest that tossing around terms like "the best RPG of the past few years" is me toying with RPS forumfolk guessing at our Bestest Best declarations, to which I would reply "Aaand?" Probably shrug, might wink. Then I'd add, "I didn't even try last year and caught you right out with Metal Gear Rising: Revengeance - I'd be far more subtle than this if I wanted to mess with you." Unless that'd be a double bluff.