He doesn't mention how many hours he spent marketing it. I suspect not that many. I fully sympathize with his struggle, but this is a trap most programmers fall into so easily. Market need/fit > Marketing > Design > Programming when it comes to software products. You can't just build it and expect that they will come, unfortunately.
Its not necessarily marketing in the sense of A/B testing his game play or fictional background or artwork or whatever, but consider general user experience stuff. So I hear its a cool rogue-like but unlike the fifty indie rogue-likes I have languishing unplayed in my steam account already, I can play this one in the browser, whoa cool, technically impressive and maybe fun too. So I go to the web page expecting a sli…
Even if it's early access at least make it Steam early access. From the demo video it looks like the game would be in a good enough state to get it on there.