I'm just going to list the Main Title games, because those seem to be only the ones you want :)
First Generation
Second Generation
Third Generation
Fourth Generation
Fifth Generation
Sixth Generation
All of the Pokemon RPG games for Nintendo consoles do not require an email. Thus, any Pokemon, from Red to X or Y, would be good for people without an email address.
Lv 'X' is a Pokemon card level.Level 'X' does not exist in Pokemon games.
All the games from the main series: Red, Blue, Green, Yellow, Gold, Silver, Crystal, Ruby, Sapphire, Emerald, Diamond, Pearl, Platinum, Black, White, Black 2, White 2, X, Y and the remakes FireRed, LeafGreen, HeartGold and SoulSilver.
Pokemon X, Pokemon Y, and Pokemon Rumble Blast are some Pokemon games for the Nintendo 3DS.
Pokemon X and Y are main series Pokemon games. They are part of the 6th generation, and introduce Pokemon #650-#721.
In order all the english games are Red, Blue, Yellow, Gold, Silver, Crystal, Fire Red, Leaf Green, Ruby, Sapphire, Emerald, Diamond, Pearl, Platinum, Heart Gold, Soul Silver, Black, White, Black 2, White 2, X, and Y.
go to a pokemart in other games or on Pokemon diamond, pearl, or platinum go to vailstone city and there will be a tall red pokemart
Duskull maybe?
You can't get a level x in pokemon games just card's. But they can go up to level 100.
You will need to trade for it or transfer it from the older games to the Pokemon Bank.
Pokemon X and Y games do sometimes require you to update your 3DS because of a "game save" bug on some of the games.
The Legendary Pokemon available in Pokemon X/Y are:Xerneas (X only)Yveltal (Y only)ArticunoZapdosMoltresMewtwoZygarde