Super Potato

Cheapo Article: 10 Fun Free Things to Do in Akihabara
Category:
Japanese script: スーパーポテト
Area: Akihabara
Access: 250 m from Akihabara Station Hibiya Line (H15)Yamanote Line (JY3)Chūō-Sōbu Line (JB21)Keihin-Tōhoku Line (JK20)
351 m from Suehirochō Station Ginza Line (G14)
Address: 3F, 4F, 5F Kitabayashi Bldg., Soto-kanda, Chiyoda-ku, Tokyo [map]
Phone: 03-5289-9933 03-5289-9933
Hours: 11:00 - 20:00(Weekdays) 10:00 - 20:00(Weekends)
Website: http://superpotatoakiba.jp

AKO36
One of the largest collection of retro gaming in the world.

Usually not cheap, but their selection is unmatched.