This is a mod of Warcraft3. To play this mod, you need to put all files(not folder) of Nirvana into the root directory of your war3 and run Nirvana.exe. The mod will not modify anything of your war3, which means you can still play the original war3 by running War3.exe.
Please read README, you may find useful information.
Replays of the 2nd NEL are included