Spike Chunsoft has a game set in 20XX where men no longer exist. The remaining women in World Uniform: Costume Fes. fight in three factions – maid, job wear , and school uniforms. You can create a character, equip an item like a giant teddy bear or HP restoring syringe, and join the fight. For more about how the game plays check out this post.
World Uniform: Costume Fes is a free to play Vita game and will officially kick off service on July 23 at 1PM. People that pre-register will get a R+ rank Codename: MB leader card as a bonus.