Here is some advice for any indie game developer who is drowning in the over-saturated market of indie games:
Port your game to an obscure operating system like BSD, Haiku, AmigaOS4, illumos, SerenityOS etc. There is a untapped market for games on those platforms and you can probably get a dedicated fanbase that way because those people would love to play something good, instead of Tux Racer. It's just like all the indie game companies who ported their games to Linux years before Linux even had a Steam port.
Unfortunately, this option is basically only available if you write your own engine and use tools that are ported to every platform known to man (like SDL), but I think it's worth it.