Design & fight with steampunk airships · By Zarkonnen
Title says it all, I purchased on itch.io, but having it on Steam is just so much better ;)
You get you Steam key by buying it on Steam - itch.io provides a DRM free download instead!
I agree that DRM-free is better, but pretty sure the description said those who buy it on itch.io are entitled to a Steam key.
If you bought it through the Bundle for Racial Justice and Equality, the bundle page specifically said there would be no Steam keys provided for the bundle purchases. Otherwise I'd say reach out to the developer.