10th Anniversary!
http://mna.net/equinox/pcb/garegga_title.jpg
http://www.tanomi.com/insanity/garegga.html
↑↑↓↓←→←→BA
21st Anniversary!
訂正:このコマンドは20th Anniversary!
http://sapporo.cool.ne.jp/thuban/0015.htm
http://www.geocities.co.jp/Playtown-Denei/3370/gra_ac.htm