A friend and I (mostly him) once came up with this ludicrous idea when we were still teenagers about making a game where you mow the lawn. Little did we realize we weren't the first people to come up with that idea... ...TBH though... mowing the lawn is one of the worst concepts for a video game. I think the only chore which could possibly be worse would be hand-washing dishes, and even then I'm not entirely convinced it WOULD be worse.