Starlair

Starlair is a Metroidvania where the players create the worlds. You play as a bounty hunter traveling the galaxy looking for adventure - and riches. Every planet in the galaxy is created by another player. Either play or build - or both! It's up to you.

The world creator allows you to build your own Metroidvania style adventure game - with potentially dozens of hours of gameplay, and then upload it to the Starlair universe to challenge players. Each world will have unique rewards that will entice many bounty hunters to visit. They'll be able to harvest resources which allows them to upgrade their player and ship.