The Refractor Engine, is a game engine designed by Stockholm-based studio Refraction Games, first developed for the computer game Codename Eagle, which was released in November 1999. Since then, Refraction Games was bought by Digital Illusions CE, and working alongside with the Refraction Games team, designed and developed the Refractor 2 Engine for the famous Battlefield game series for the computer.
Why i put for this engine 10?
Well...
It supports my childhood game: Battlefield 2 and 2142
Good.
Destructive.
I like it :D