Surprise Coupon Event
● Coupon Number:
- HEAT WAVE WARNING
● Event Rewards:
* This coupon is valid until September 30, 2025, 14:59 UTC (September 30, 2025, 07:59 PDT).
* The coupon can only be redeemed once per account.
Surprise Coupon Event
Source: Steam Community (opens in a new tab)