UPDATE 16/03/2015 7.20pm: All codes have been claimed. On the plus side, Rise of the Triad will still be 80 per cent off until Thursday.
ORIGINAL STORY 16/03/2015 4.33pm: GOG.com is handing out 30,000 copies of 2013 shooter Rise of the Triad for free.
The offer is available now and will run until all 30,000 keys are redeemed.
Rise of the Triad will then go on sale (at 80 per cent off), along with Unreal Tournament 2004 and SiN Gold (both 70 per cent off), plus Alien vs. Predator (50 per cent off). This offer will last until Thursday, 19th March at 3.59pm GMT.
An upcoming update for Rise of the Triad will add in support for GOG.com and Steam owners of the game to face off together.
The over-the-top retro-styled shooter originally launched back in July 2013 for PC and is a remake of the 1994 classic Rise of the Triad: Dark War. See it in all of its gory glory below: