Protochroma is a browser-based adoptables game/petsite with a heavy sci-fi bend.
I also do art for it.
There are dozens of creatures to collect (and there will always be more planned) each with 16 different color variations to choose from. You can also take your creatures into adventures called Delves, where they'll help you by attacking the enemy or healing you. The ancestry of each creature is able to be fully traced back, and people place higher value on Wild Caught creatures (with no ancestry to trace) or high-generation "patterned" ancestry trees, like the Vitrevern (white, glassy winged serpent near the end there) with his G6 "checker" lineage. The site receives frequent updates and is made by one of the people who made GPX+, if you remember that.
My profile: https://protochroma.net/user/Keileon/
I also help run the wiki: https://protochroma.miraheze.org/wiki/Main_Page