The same as Retro Blue. Use Arrow Keys or WASD to move. Do not fall and jump on the platforms. Space to air jump: You can air jump when there is a white glow around you. If you get stuck to platform, its a not a bug, its a feature, and it's get harder overtime.
The new Retro Blueberry! Planned to revamp the Retro Blueberry because the old Retro Blueberry is pure blank without any abilities. Retro Blue: https://scratch.mit.edu/projects/518378162 Old Retro Blueberry: https://scratch.mit.edu/projects/1022997856/ Thumbnail text taken from Retro Raspberry. Music: https://www.youtube.com/watch?v=LIbonghiydw