Kingdom of Paradise
| Key of Heaven | |
|---|---|
| Developer(s) | Climax Entertainment | 
| Publisher(s) | Sony Computer Entertainment | 
| Platform(s) | PlayStation Portable | 
| Release | |
| Genre(s) | Action role-playing | 
| Mode(s) | Single-player | 
Kingdom of Paradise, released as Tenchi no Mon (天地の門) in Japan and Key of Heaven in Europe, is an action role-playing video game developed by Climax Entertainment and published by Sony for the PlayStation Portable in 2005. It was re-released as a PlayStation Network title for PS4 and PS5 in September 20, 2022. A prequel is available in Japan, Korea, and China called Tenchi no Mon 2: Busōden.
Heavily influenced by Asian culture in general, and Chinese Wuxia fantasy in particular, the game contains clans named after the Ssu Ling. The fifth clan is named Kirin and is not part of the group.