to get regirock in Pokemon platinum, you have to upload it from ruby, Sapphire, or emerald.
Okay: 1:It's PLATINUM not PLATNOM. 2:It's a Pokemon game that's an upgraded version of Pokemon pearl and diamond.
migrate it from firered, or leafgreen
online? no
you don't
In Pokemon platnom the door opens magically when you catch the newest Pokemon CROWLEY caught at an event and when you go tho the door it should be open.
there is no regirock in Pokemon pearl,migrate please to get regirock
march 22
you need to have the national pokedex
Migrate one from leafgreen.
you must complete the sinnoh pokedex and try to enter. shell say no, but Candice comes and lets you in. its pointless unless you want a jynx. to get regigigas at the bottom, you need regirock,-ice, and -steel.
Regirock is a Rock type pokemon.
I think around lvl 20