I'm glad you're enjoying SoGE, Sinkillr. It's primarily balanced towards MP, by taking into account how humans play and act, with some side work having been put aside to make the AI not absolutely garbage.
That being said, have you tried simply making a game on ICO and hope people pop in? That might work. Otherwise, maybe you can go through this page and find some interested people. Alternatively I could schedule an MP event on the Steam page, for time(s) that work for you, and you can be the game host, assuming you don't act rudely towards people.