Insert Coin lists 13 venues in Shinjuku City where you can play: 274 arcade games, 23 redemption games. The best-stocked one is Takadanobaba Mikado Game Center, with 136 games.
Nearby cities
Toshima City
9 venues · 169 arcade games, 6 redemption games
Shibuya
7 venues · 97 arcade games, 13 redemption games
Chiyoda City
13 venues · 347 arcade games, 47 redemption games, 3 dartboards, 1 pinball machine
Taito City
5 venues · 40 arcade games, 21 redemption games
Minato City
5 venues · 48 arcade games, 7 pinball machines, 6 redemption games
Koto City
7 venues · 70 arcade games, 26 redemption games
Kawasaki
5 venues · 29 arcade games, 2 redemption games
Saitama
13 venues · 83 arcade games, 32 redemption games, 1 pinball machine