fp-units-castle-game-engine software package provides 5.0.0-3, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install fp-units-castle-game-engine
fp-units-castle-game-engine is installed in your system.
Make ensure the fp-units-castle-game-engine package were installed using the commands given below,
$ sudo dpkg-query -l | grep fp-units-castle-game-engine *
You will get with fp-units-castle-game-engine package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Miscellaneous |
| Package | fp-units-castle-game-engine |
| Version | 5.0.0-3 |
| Description | 5.0.0-3 |
| Sub Section | Misc |