Japan is by far considered the weakest country in the game. They lack the mechanized upgrades that would allow their Anti-Tank Mechs to go head to head with an upgraded division of Anti-Tank Mechs from another country. In addition, they lack heavy tanks, and the necessary upgrades to make Artillery tanks menacing. They have Tankettes, which can be produced fairly cheaply, but lack the necessary firepower to be a real threat unless in produced in sufficient numbers.

Japan is relatively sound country to play in a 1v1 game as long as the game is short. If a 1v1 game lasts for an extended period of time, Japan will typically fall due to the lack of necessary upgrades for their Mechanized Regiments.

In a Team based game, Japan should almost never be used. Team games last anywhere from 30 minutes to 2 hours. In a team based game, Japan lacks the ability to create the types of regiments that can post a threat to another country.