Previously known internally as "Project Cognac," Snapchat's in-app gaming platform is now live as "Snap Games." The six launch titles are Bitmoji Party, Tiny Royale, Snake Squad, C.A.T.S. Drift Race, Zombie Rescue Squad, and Alphabear Hustle. There is no install required, as all these titles can be launched from the Chat bar.
https://www.notebookcheck.net/Snap-Games-brings-in-app-gaming-to-Snapchat.415955.0.html