"CRIMSON ROOM", "VIRIDIAN ROOM", "BLUE CHAMBER" and "WHITE CHAMBER" are the pioneers of "Room Escape Games".
A Japanese creator Toshimitsu Takagi has made them.
Wikipedia : (http://en.wikipedia.org/wiki/Crimson_Room)
The official site of Toshimitsu Takagi is the following address.
TAKAGISM : (http://www.takagism.net)
All the originals of Toshimitsu Takagi's games can be played at the site below.
Fasco : (http://www.fasco-csc.com)