That's a very good game that went under the radar for me. I think the cover image wasn't selling it well enough. But it feels like a hidden gem. Nice controls, many upgrades, great music and uncomfortable (as it should) atmosphere. I would add some parallax scrolling or even just waves of colors, to show the progress in a more visual manner, and so that it won't feel too repetitive. Other than that, no complains at all. great game!