You made a visually appealing game from simple shaped assets, good job on that!
I also liked the eery atmosphere you created with you sound design.
I have to be honest that I didn't enjoy the gameplay as progressing further than your previous run was purely based on luck.
As remembering the sequence is the core skill a player needs to succeed in the game you could have flashed the right blocks at the beginning so the player doesn't have to obtain the information by brute-forcing their way forward to obtain the information.