These are some Fake Pokemon Video Game Cheats that I have made:
Get all three super-ancient Pokemon (Rayquaza, Kyogre, Groudon) on Ruby/Sapphire/Emerald and put only them in your party (in this order depending on version, Ruby: #1 Slot Groudon #2 Slot Rayquaza #3 Slot Kyogre, Sapphire: #1 Slot Kyogre #2 Slot Rayquaza #3 Slot Groudon, Emerald: #1 Slot Rayquaza #2 Slot Kyogre or Groudon which one you want #3 Slot Kyogre or Groudon which one you want). Then Fly to Littleroot Town. Go to Professor Birch and talk to him. He will say "Wow! You have all the super-ancient Pokemon! Here, take this Mew!" Obtained the Mew! Nickname this Mew? Mew was transferred to Lanette's PC! This is fake. Do not try it!