A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat. Ashes of the Singularity: Escalation has Mostly Positive reviews on Steam and it usually costs $29.99
Get a Steam Key for Ashes of the Singularity: Escalation on Humble Bundle, redeem it on Steam and keep it forever! You can claim the game from May 7th at 19:00 CET to May 10th at 19:00 CET
Just head over to Humble Store before May 10th 2020, add the game to your cart and checkout, then once you get a Steam key, redeem it on Steam in less than 7 days. Simple as that. After that, the game is yours to keep, and play, forever.