The new weekly sale at GOG.com has deals of up to 85% off selected games, and if you spend up to $15 you can unlock up to three games completely free! Here's how it works: $5 unlocks one free title, $10 unlocks two and $15 unlocks all three titles.
Free games to unlock:
Breach and Clear: Deadline Rebirth
The weekly sale and the unlockables offer will last until September 18, 4PM UTC, remember, the free games will be calculated and then distributed via email starting on Tuesday, September 19th.