Google announced a second temporary exclusive for Stadia, called Spitlings.
Spitlings is an indie focused on the local co-op, in which up to 4 players try to pass through the levels while spitting on enemies and trying to cross sections of platforms.
You will have to beat the other players to reach the end of the level and kill most of the monsters, but despite this competitiveness, they will have to cooperate because if one dies, they all restart the game.
Spitlings features a story and arcade mode, with over 100 levels and 30 themes, with characters to unlock. There is even a level editor in which 4 characters can collaborate.
There is no release date yet, but Spitling will be a temporary exclusive to Google Stadia.