FYI: I have been in contact with Paul Eres/RinkuHero, the developer of Immortal Defense and Saturated Dreamers. You can get a free Steam key from him for Immortal Defense if you have purchased the game from him in the past.
From his website...."How to get a Steam Key: if you previously purchased Immortal Defense from this site, email rinkuhero @ gmail dot com and request a Steam Key. Be sure to include either your original purchase information, or the email that you purchased the game using. These will be processed manually, so allow up to 24 hours for a reply. I will start to send them out after the game's August 31 Steam release. NOTE: This is not available for people who got the game for free through the "Game Giveaway of the Day" website, because I don't have access to that information. This is only for people who bought the game from my site (either at a set price or during that pay what you want thing). If you bought the game from Direct2Drive, Reflexive, or other third-party sites, I won't have your email, but if you still have the purchase information from them, you can send that to me.
I am posting this because I am sure there were a few members back then that did buy his game from him because he also offered his new game, Saturated Dreamers, for testing. I sent him over 20.00 for the 2. He is still working on SD but it is still in testing. He offered me a Steam key to continue testing it. It is a lovely, colourful exploratory non violent game