Dumb Game Monday was a weekly Monday stream where Kyle Bosman would play a different game voted upon by the Patreon supporters. Once the game had been completed, or Kyle could no longer stand the game, he would then do a "Fun Game Monday" in between dumb games.
The theme of the stream puts Kyle in a situation in which his grandma gifts him a game he knows nothing about, and he would have to learn to love this game for grandma's sake.