balls

Sometimes I randomly lose all of my momentum, and there are weird shape things at the top but I can't see them. I don't know what they mean, but they seem important. Still, really fun.

i love 3d games

The game is really basic, your new to game development (I'm assuming) and this is probably your first game (I'm assuming).
There's nothing objectively bad with the game. It's just a simple game.
Your new to game development and you don't have the skills to make a more complex game yet. In the future you can add more variety, for example a forest skin, city skin, park skin, etc. Since the game is so basic it gets boring pretty quickly.
But hey, it's better than what I could do.
(Please don't take this as hate)