
1) Video game engine
Found on
https://www.crosswordclues.com/clue/xngine

XnGine was a 3D engine developed by Bethesda Softworks. In 1997 support for higher resolutions was added and in 1998 it was made compatible with 3dfx graphics cards. The Terminator: Future Shock was the first game to use the engine, and also the first 3D PC game to use the now popular mouse-look interface, which was initially unpopular with gamers...
Found on
http://en.wikipedia.org/wiki/XnGine
No exact match found.