'Copper' mod may seem like a trinket - especially if to know little about what it does; for the education in which, I recommend the developer commentary section of relevant "readme" file - but it is a wealth of excellence.

'Copper', is a great deal of polish; the carrying out of which, has required impressive degree of knowledge in the game, speaking of both the player-practical, as well as the technological perspective.

Literally, 'Copper' aims to be the invisible hand, slightly elevating your basic gameplay experience to a more satisfying outcome, without interrupting or even breaking your pattern.

Some may say that 'Copper' is insufficient, because it focuses on the original game factors only, rather than pushing the 'Quake' universe further with novelties and reimaginations. This, though, is the greatest strength of 'Copper', in my opinion: it aims for universal compatibility, rewarding those content creators, that remained faithful to the original game or the original game design principles, so as not to distinguish oneself as something other than 'Quake'.