This is a really good mouse rhythm(?) game. I’ve never really played osu, but it kind of reminds me of that, just with a different representation The music goes really well with the game too. Here’s my score
This game was not intended to be rhythm, just a simple arcade similar to Super Hexagon. Probably this reminded you of osu because it has gamemode "Catch the Beat" with somewhat similar gameplay. Your score is quite impressive! It's close to my time record at 6:13.58. Thanks for your feedback!