Indie studio Frozenbyte is offering Steam coupons through Autumn Seal, a digital slot machine that rewards players who score three of the same icon.

Similar in nature to the previous Summer Seal, this season's sale includes a number of Finnish developers. Frozenbyte's own Trine, Trine 2, Trine 2: Goblin Menace, and the complete Trine collection are included in the deal; additionally, coupons for Remedy Entertainment's Alan Wake, both the collector's edition and American Nightmare, Recoil Games' Rochard and Almost Human's Legend of Grimrock are available. Coupons take either 50 or 75 percent off each game and are redeemable via Steam only.

The slots offer 10 chances to win coupons with a 10-minute respawn time. All offers expire on Nov. 20.