Developer Page: Agenda
(dev id no. 13 - prev next)

Parent company of argent, if not entirely the same thing. Billiards and mahjong, yknow. Seems like their primary business involves such exciting PC and Mac software as "Label Max" and "Miracle Household Account Book 4".
Official Site:

Simple 2000 Ultimate Series
Toukon! Dramatic Mahjong ~Ten: Tenwa Doori no Kaidanji~

Simple 2960 Tomodachi Series
The Trump ~Minna de Asoberu 12 Shurui no Trump Game~ (Funny Cards) (with access)

Simple DS Series
The Billiard (Billiard Action)

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