GOG.com has announced the autumn Insomnia Promo which will see discounts of up to 80 per cent on 100 games during the promotion's lifetime. However, only one game will be available at a time in limited quantities – once the allotment has sold out another game will replace it.
As such, the length of the promotion and how long the discount on each game lasts will depend on how quickly users snap up the current offer. It also means that some games will only be available in the middle of the night depending on where you live – hence the name of the promotion.
In a press release GOG wrote:
"Starting on Wednesday the 13th of November at 2:00 GMT (09:00 ET) and running until GOG.com is out of games, this promo has deals that are worth staying up for. The games will be on sale only one at a time in limited numbers of copies. When the stock of one game–marked on the promo page with a counter–runs out, another game is up."
Some of the games included in the Insomnia Promo are sci-fi horror RPG System Shock 2, award-winning 2D/3D puzzle-platformer Fez, and gore-soaked shooter Hotline Miami, challenging platformer Rayman Origins, the cult-classic Baldur's Gate saga, and the sci-fi turn-based strategy game Sid Meier's Alpha Centauri.