Right in the heart of Tokyo is a free and convenient play space called Akasaka Kids-Teens Hall Nandemo (港区立赤坂子ども中高生プラザ ) where you can drop in for a few hours and enjoy the kids letting off steam. We love visiting local public community centers such as Akasaka Kids-Teens Hall Nandemo because your kids can enjoy “new” toys in a fun environment. My daughter loves the kids and baby room, art room and gym space. It is a quick walk from Akasaka and Tameike-Sanno Stations. Monthly activities are offered by age group; baby, elementary, and jr/sr. high. English language program information is posted on this page (scroll to the bottom to find English links).
For other indoor play and recreation centers check here.
Akasaka Kids-Teens Hall Nandemo, Akasaka – Convenient and Free Place 
to Play and Meet
It is necessary to sign-in to Akasaka Kids-Teens Hall Nandemo by writing in English or Japanese your name and address and ages of children, but all of the fun is free. You do not need to be a resident of Tokyo or Japan; visitors are welcome. There is no cafe, but you are welcome to bring food and beverages and eat in the main area. There is also a small kitchen and a nursing room. Here is a clickable diagram where you can see into each room in the center (click a room).
Akasaka Kids-Teens Hall Nandemo, Akasaka
Akasaka Kids-Teens Hall Nandemo, Akasaka
Address: 6-6-14 Akasaka, Minato-ku, Tokyo
Phone: 03-5561-7830 (Japanese language only)
Business Hours: 9:30 – 20:00 daily; Closed Holidays
Website: http://www.seirouin.or.jp/nandemo/ (English information updated monthly)
Facebook page
Access: 2 min walk from exit 5b at Akasaka Station on the Chiyoda Line and 8 min walk from exit 11 at Tameike-Sanno on the Ginza and Namboku Lines (Good map and directions in English); There is no public parking on the premises; however, plenty of bike parking.
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I always like your articles! I have a baby in Japan and it’s really helpful to have good informations on what to do here. Keep going!
Sandrine – Thanks so much for your support and feedback! Glad we are helping. Sandra and Lauren