Version 12.1 updated June 24 @ 9:44pm (PST) - Civilization NiGHTS is a complete conversion modpack. Players unfamiliar with the mod are advised to check out the header forum thread for more details and game play statistics.
NiGHTS Sub-Forum: http://forums.civfanatics.com/forumdisplay.php?f=450
IMPORTANT: DOWNLOAD/INSTALLATION INSTRUCTIONS!
Note that the following locations could differ depending on where you've installed CIV V.
1. Download and copy file into C:\<username>\Documents\My Games\Sid Meier's Civilization 5\MODS
2. Delete your cache folder in C:\<username>\Documents\My Games\Sid Meier's Civilization 5\cache
3. Delete the contents of the ModUserData folder in C:\<username>\Documents\My Games\Sid Meier's Civilization 5\ModUserData
4. Verify your cache and defrag your CIV V files through Steam (right click, properties, local files, verify integrity.
5. Make sure your game is up to date with patch 188.8.131.524!
6. Load CIV V and click Install button in the ModBrowser.