What happens when two different games battle each other with an item or form that doesn't exist in one of them?

Examples: What happens if an HGSS player battles a DP player with a griseous orb? What happens when a BW2 player battles a BW player with a therian Landorus? What happens when an ORAS player battles an XY player with a Lopunnite? What happens when an USM player battles a SM player with a Naganadel? Please don’t question my curiosity.

Pleaselog inorregisterto add a comment.

Well, In all games XY and after, the game will not allow you to battle, saying you need Kalos Rules (ORAS) or something like that.

In all other cases (I have tested battles with my games), it is best if I give an example.

If I Fight my cousin (He has White 2 and I have White), and he uses White Kyurem, on my screen, It appears to be Regular Kyurem, and he can’t use Freeze Shock, as it will “Fail”. It still had Turboblaze, however.

I am pretty sure that is the same for D/P and SS (which I can test later if you wish), Giratina will look like a regular one, but still have Levitate. Idk if it gets Griseous orb boost, but I can test that, too.

Source: Experience

Hope I helped!

When I tried to battle an Omega Ruby player with a Lopunnite against an X player it gave me the following message: “Rules have been changed to Kalos rules.At least one participant is using Pokemon X or Pokemon Y.Items, moves, and Pokemon that have been newly addedin Pokemon Omega Ruby and Pokemon Alpha Sapphirecan’t be used.“And subsequently:“You have not met the conditions, so you cannot participate”

I imagine this would be the case in any other example.

Sorry to disappoint, the universe didn’t implode :/

When I was battling in USUM against some SM players, when it checks the team, it saysThis team is not allowed, Naganadel is not usable in this battle.