Krater -90%

Actually, if you go to the forums of the specfic games with these coupons on steam, you'd see a lot of people offering free 90% coupons. 3Switched, Krater, Iron Sky, X-Blades to name a few. Example 1, example 2, example 3 and I go could on and on because there's indeed many such posts. To OP: Just check the steam krater forum for a free coupon! :)