The TRUTH about duplicating
When doing the Missingno. duplicate items trick, the number of the item you duplicated is 129 EXACTLY. It's not 99, not 100, not 120, it's 129.
The TRUTH about S.S Anne
This is a very popular code on the internet - the one that says if you Surf where S.S Anne is, you can get on an island with a truck and if you push the truck with Strength, Mew is under it. This code was absoulutely EVERYWHERE, but it's fake. Yes, the truck is there, but there's no way to push it with Strength. But Mew actually is in the game. Go to the "tips and tricks" section to find out.
The TRUTH about the Moon stones
There are FIVE Moon stones in Red, Blue and Yellow. Five, not three. Two of them are invisible. Have fun finding them!
The TRUTH about Pikablu
Pikablu doesn't exist. No, not in G/S/C either. It's MARILL, NOT PIKABLU! There's no Pikablu, only Marill in G/S/C and it's a pure Water type, not Water/Electric type, and it's about as related to Pikachu as Sandshrew.