Originally a 2010 freeware game. I feel like the earlier wave of NES-inspired games were a lot more faithful to the difficulty of an actual NES game than, say, Shovel Knight. That's not a retvrn thing though, because I'm probably not going to complete this game unless I'm in the mood to bash my head against a wall. Also, it drives me nuts that this game has a dash move that you cannot use in the air (unless that's what the dash upgrade does) and that muscle memory caused a lot of deaths.

Still, while it's a bit sluggish, I did like seeing all the different enemy types, and there's a lot of secret (genuinely hidden) stuff to find if that's your thing. I assume the upgrades also make the game more tolerable over time, so it's not entirely unforgiving. It honestly makes me a bit surprised that this game has been so overlooked, but that seems to happen to a lot of freeware not available on a browser I suppose.