It is a sequel of The Impossible Game.
While The Impossible Game 2 is both rhythm and platformer, it also contains a multiplayer battle royale mode.
[1][2] Even though checkpoints are flags to spawn in the area if you die and you can also stop them by clicking the Checkpoints button.
[1] The Impossible Game 2 entered early access on November 3, 2021.
[2] Harry Slatter from Gamezebo rated The Impossible Game 2 80 out of 100.