You are asking for a lot for a game to be on the Google Play Store. A lot of games on this site are primarily built for PC, and to reach a wider audience, they convert it to being able to played on a mobile device. It includes a lot of work. Different OS and different interface for interaction to say the least. It also involves different coding. So any publisher that bothers to make it "phone capable" is already in my highest standing.
I've never published a game and have not partaken in the build of one, but I know some level of coding, and that is definitely a chore. This game is great for what it is. Should it ever reach the GPS? No. They should be supported through their Patreon and loved by the circles that understand it. Steam is a definite potentially maybe! Google Play Store and the hoops and the level of editing unless you release a watered down version that requires so much more maintenance.... Not worth it.