Yes, exactly. Red notes are on-beat, blue notes are off-beat.
Here you go https://soundcloud.com/cardboard_box/sets/hyperbeatz-1
Are you playing the web version on mobile? Because mobile is not supported.
You'll need a NES emulator like Mesen: https://www.mesen.ca/Then download the game and open the .nes file in Mesen.
Edit: I also added a web version you can play in browser. It doesn't run as well as on emulator but it involves no setup.
