Pokémon Red Cheats

Get tons of Lv 50's and Higher!
After you defeat the Pokemon Leauge go to the cave in Cerulean City(The one on the opposite side of the grass close to the bridge) the man wont be guarding it anymore and you can go in there. You can catch Pokemon Lv 50 and higher and at the end of the cave you can catch a Mewtwo who is Lv 70.