We did a quick prototype of a space shooter game that is designed to run well in browsers. The player collects a bright stones while flying through the asteroids field. It gives points that helps to unlock next ships. It is a classic idea for the game but we gave it a modern feel and realistic graphics. Our main goal was to publish it on the Crazy Games site. And we did exactly this:
https://www.crazygames.com/game/space-battle
Morover, we also ported the game to the Android.
[WebGL and mobile] Space schooter game designed and created by us