Crayta is a uniquely collaborative game creation platform - it lets many players work together to create games in real-time and even includes a multiplayer code editor.
It's been designed from the ground-up to provide accessible creation tools, enabling creators to make great looking games which can then be shared quickly and easily through our share codes system (https://medium.com/unit2games/introducing-stadia-state-share-beta-with-crayta-b024575dc52).