i have doom3 but i don't have doom 3 restriction of evil,
i want just to know if doom3: restriction of evil levels are better or the original doom3 is more excitement
ROE is a much better game, I have it and have beaten it many times and can say that the levels are much better designed, the double barrel shotty owns ass, and for $15, you should already have it.
You can put it to better use in ROE, in HL2 all you can basically do with it is move boxes that are blocking you, in ROE you can catch the fireballs that the imps throw at you and then throw them back, and you pick up those spider things and hurl them across the room.... wait, what can you do with the grv gun in HL2???