Developer Page: Warashi
(dev id no. 7 - prev next)

Mainly known in the west for their shooter "Shienryu", aka "Gekioh Shooting King" or "Steel Dragon", which was released with a new 3D sequel as Simple 2000 The Shooting. Also they seem to be responsible for a fair few mahjong games. Simple-wise, the only one of theirs I'm familiar with is The Block Kuzushi (DS), which is probably the best Breakout clone I've played since Puchi Carat. Great music, too.
Official Site:

Simple 1500 Series
The Mahjong 2, The Shougi 2, The Shisenshou (with Irem Software Engineering)

Simple 2000 Series
The Quiz 20,000 Mon, The Shooting ~Double Shienryu~ (Steel Dragon EX), The Sekai Meisaku Gekijou Quiz

Simple 2000 Honkaku Shikou Series
The Mahjong

Simple 2000 Ultimate Series
Akagi ~Yami ni Oritatta Tensai~, Stylish Mahjong: Usagi -Yasei no Toupai- & Usagi -Yasei no Toupai The Arcade- Double Pack

Simple Character 2000 Series
Kagaku Ninja Tai Gatchaman: The Shooting

Simple DS Series
The Mahjong, The Mushitori Oukoku ~Shinshu Hakken! Nokogiri Kabuto!?~ (Beetle King), The Block Kuzushi (Brick 'em All DS)

Simple 2000 Series 2in1
The Shooting ~Double Shienryu~ & The Helicopter (with Tomcat System)

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