Core

Core is a free-to-play online video game with an integrated game creation system, developed by Manticore Games. It was released as an open alpha version on March 16, 2020, and became available as Early Access on April 15, 2021. Core hosts user-generated games that are designed for an older teen and adult audience. Core's game creation system is designed to simplify video game creation in order to allow more individuals to develop games. Manticore Games, the developer of Core, was co-founded by Frederic Descamps and Jordan Maynard in 2016 and is based in San Mateo, California. Core is based on a similar concept as other gaming platforms for user-generated games such as Roblox.

(Source: Wikipedia)