Wrong again Ssbblover, i was actually right, i know this because i used to own this fake game:
I've played Diamond (in ROM form) and the game is just terrible. It starts off with an endlessly long intro sequence where the hero talks about going to "electric monster's world", which is located inside a tree? And there's a phone ringing under the tree, which is what gets him inside. I'm completely serious - and you have to scroll through "Engrish" text for TEN FULL MINUTES (I know, because there's an in-game clock on your main screen) before you can make a single decision on your own, and that's aimlessly walking around trying to find somebody.
The game looks like a standard RPG in many ways, but I couldn't get into it. The game is horribly translated, for starters. Sample: "Regard the 'map' with a START button" or something like that. The translation is laughable. Perhaps to avoid copyright issues (other than the name "Pokemon" on the title screen), Pokemon are not mentioned once in the game. They must say "electric monsters world" about fifty times in the ten-minute intro dialogue. As any Pokemon gamer knows, the game -should- start with Oak talking about the world of POKEMON. Not electric monsters.
The "electric monsters" can talk to you, but it doesn't even call them Pokemon inside the game. A big feature of the game is some cell-phone thing with "DShoot" that your character has. I don't know what "DShoot" is, but they go on about it at length. Too bad I couldn't understand what they were talking about. Perhaps in whatever this game was in the original Japanese, the wireless adapter (used in Japanese Pokemon Crystal) was a key selling point, so they wanted to give your character the phone as well. I wonder what this game was originally supposed to be... obviously this is not an original creation. More than likely this was a Japanese exclusive video game, and someone tried to translate it (badly) to make a quick buck.
When you walk in the grass (or anywhere else), you may encounter a wild creature. Battle it, and win, and you 'get your opponent's phone number', which (I think), means that you can call it when you want it to battle for you. No Pokeballs, no choosing whether you want the thing or not, it becomes yours. Oh, and these 'electric monsters' will randomly call you up and prattle about stupid stuff. One asked if I'd eaten curry.
I've received different pictures of these games and boxes from dragonslayerboy. There isn't even continuity in these fakes! And from what I can tell, neither of these monsters actually appear in the games.
Proves my post wasn't random, and i know that the real pokémon diamond is for ds, i'm not stupid
edit: by the way this was all long before the ds saw the light of day