This modification would change the graphics in the game, make it more beautiful and photo-realistic.
I would also like to note that mod looks great as a summer version of the surrounding world and with winter, autumn. Also it is worth saying that the MOD works well on weak PC (assuming that the original game on minimum settings is at least 20 FPS, otherwise the mod put pointless) — on average, you lose FPS 5-7 when driving on country roads, near cities and FPS will fall more. But again — it's not my fault and not the fault of the MOD, here everything depends on your PC and graphics settings, installed.
About multiplayer — I cannot say anything, for playing the extra's, sorry.
Any version of the game.
This mod is ENBSeries v 0.326 personally with my configuration. Author: ENB Boris Vorontsov.