I have been working on my game, Dualspace. I have 33 reviews with a 4.64 average and over 2k views, but still not a single donation. Seeing from your post "How much money have you invested in your game?", you would have to be in the top sellers list to make your money back. Once you finish making the game, Steam would make it easier to make money faster.
For reference, the game is https://codergenius72.itch.io/dualspace
