It actually already exists ;) http://mech-warfare.com/ http://mech-warfare.com/ Altough you can't play from home, but all the players have only the cameras of

It actually already exists ;) http://mech-warfare.com/ http://mech-warfare.com/ Altough you can't play from home, but all the players have only the cameras of their bot to look around. So far they play with electric airsoft pistols and each bot (which has to be a walker, so no wheels or anything) has a few standardized sensor plates to register hits. As most control the bots via WiFi, it would certainly be possible to host such a competition via internet. [I never played this myself, but it looks like fun!]