I have some tips Try and add some gameplay and try and add a bit more decor. People really want "flashy games", something that aspires. People like simple quality but if you're good at art you can make it complex. Even a simple game of like tetris people would enjoy.

I made a Tetris portal in map 1 just run up immediately and don't stop until you go into a wall then go to the right and you will see two portals but one red and blue is the tetris one I hope you enjoy the game and everyone else enjoys have a great day and I love to get more ideas from you