Red has Ekans, Arbok, Oddish, Gloom, Vileplume, Mankey, Primeape, Growlithe, Arcainine, Scyther and Electabuzz Blue has Sandshrew, Sandslash, Vulpix, Ninetales, Meowth, Persian, Bellsprout, Weepinbell, Victreebel, Magmar and Pinsir Other then those version exclusive Pokemon, they're both the same, though personally I prefer Blue