Following up with a Mega Man entry, Y+1 has been in development for a while so this side-game was a pretty nice surprise. Basically this is a small game with 9 short stages with varying difficulty, 3 bosses, you choose 2 weapons to use per stage. Lasts an hour if you are good at the game... took me a day to get through it.
As a look into what Y+1 will be, it's really cool, and as it's own thing is also really cool.
Weapons are unique and they are all pretty great, the stages are really creative and got some good design (the hard stages aren't kidding, they are hard.)
It's also got some solid accessibility options which will be in the main game! Haven't used them but they seem really good from what I've seen in the options for them, and you get something really nice for completing all 9 stages.
It's good to see another game in the same style as the Christmas Carol series (check that one out too, it's really good!) And I hope to see more small fangames like this one.
(I'm also hoping that the weapons in this game are added as unlockables to Y+1 when it releases because they are really, REALLY fun to play with.)