I am making effects and hopefully make the gameplay smoother. I would try turbowarp. To change the level appear see inside! Work in progress… - Beta Items - Progress bar [BETA] Menu [Beta]
Credit to griffpatch for the main geometry dash code! I made the entire menu, level effects, block breaking. DONT PRESS THE SKIN BUTTON, OR YOUR GAME WILL BREAK!!! It is a feature that wont be finished.