Unzip FragArena.wld and FragArena.tbn in the levels/deathmatch directory, because that's where most people unzip it, ans that if you unzip those files in other directories, yo
Extract the Eye Of Ra.zip into your Serious Sam directory with paths on (Usually, C:Program filesCroteamSerious Sam). Then start the game, click single
==INSTALLIATION=============================================================== Unzip this file to your Serious Sam directory. Default is "C:Program FilesCroteamSerious Sam".
==SERIOUS SAM ADDON README====================================