グラウエンの鳥籠 Kapitel1 契約
Grauen No Torikago Kapitel 1 -Keiyaku- (Bird Cage Chapter 1: Keiyaku)
30/09/1999

HDR-0034
グラウエンの鳥籠 Kapitel2 鳥籠 (Dreamcast Direct)
Grauen No Torikago Kapitel 2 -Torikago- (Bird Cage Chapter 2: Torikago)
25/11/1999

HDR-0035
グラウエンの鳥籠 Kapitel3 陥穽 (Dreamcast DIRECT専売)
Grauen No Torikago Kapitel 3 -Kansei- (Bird Cage Chapter 3: Kansei )
27/01/2000

HDR-0036
グラウエンの鳥籠 Kapitel4 邂逅 (Dreamcast DIRECT専売)
Grauen No Torikago Kapitel 4 -Kaikou- (Bird Cage Chapter 4: Kaikou)
30/03/2000

HDR-0037
グラウエンの鳥籠 Kapitel5 贖罪 (Dreamcast DIRECT専売)
Grauen No Torikago Kapitel 5 -Shokuzai- (Bird Cage Chapter 5: Shokuzai)
25/05/2000

HDR-0038
グラウエンの鳥籠 Kapitel6 戦慄 (Dreamcast DIRECT専売)
Grauen No Torikago Kapitel 6 -Senritsu- (Bird Cage Chapter 6: Senritsu)
27/07/2000

QUOTE(Segagagadomain.com)
Not one of Sega's best ideas this one. Sure, an interactive drama sound pretty cool but what happens when you take the servers down? Yes, that's right. The disc is nothing more than a paper weight. What makes it worse is that Sega closed the servers to this series pretty quickly as well. You would at least have expected Sega to add an off line mode wouldn't you? But no. Nothing at all. The only thing you can now do with this disc is an interview with the main actress.
I must also point out that this series of games was never on sale via shops but only via Sega's Dreamcast Direct store that later went on to be called Sega Direct.
I must also point out that this series of games was never on sale via shops but only via Sega's Dreamcast Direct store that later went on to be called Sega Direct.
First of all, is it porn? With a provactive name like Bird Cage, it sounds like porn. Not only are the games some what rare, but all the content seems to have been online and now the servers are gone. Very little seems to be known about them, at least in english anyway.