https://sadface-rl.itch.io/aseteroids
Its basically a clone, as I was told for our first game to make something similar to pong or breakout, I went with Asteroids, its free, it plays in the browser and its action packed.
The Idea is to just aim for an highscore, the difficulty ramps up fairly quick but not too quick, I would love to see someone beat 2000 score