Regi chambers Platinum · Area

Regi chambers on the Sinnoh map (marked at Snowpoint City)

The Regi chambers are three small post-game ruins: the Iron Ruins off B3F of Iron Island (Registeel), the Iceberg Ruins inside Mt. Coronet by the Route 216 exit (Regice), and the Rock Peak Ruins on Route 228 (Regirock). Each holds a statue that stays silent unless you have entered the Hall of Fame and carry a Regigigas from an official event. Step on all seven floor dots, examine the statue, and the Regi appears at level 30.

Wild Pokémon: None
Items: 0
Trainers: 0

Connects to: Mt. Coronet · Iron Island · Route 228

Gift, legendary and roaming Pokémon

Registeel Lv. 30 · One-off encounter · Iron Ruins

In the Iron Ruins on Iron Island. After the Hall of Fame, bring a Regigigas from an official event and step on the dots in the chamber to wake it.

Regice Lv. 30 · One-off encounter · Iceberg Ruins

In the Iceberg Ruins inside Mt. Coronet, near the Route 216 exit. Needs an event Regigigas in your party after the Hall of Fame.

Regirock Lv. 30 · One-off encounter · Rock Peak Ruins

In the Rock Peak Ruins on Route 228. Needs an event Regigigas in your party after the Hall of Fame.

Wild Pokémon

No wild Pokémon here.

Items

No items to pick up here.

Tips

You need a Regigigas from an official event in your party; the Snowpoint Temple Regigigas can't help, because waking it requires all three Regis.
With that Regigigas in your party, step on all seven dots on the floor, then examine the statue to start the battle.
Registeel is in the Iron Ruins, entered from B3F of Iron Island.
Regice is in the Iceberg Ruins, a side room inside Mt. Coronet near the exit to Route 216.
Regirock is in the Rock Peak Ruins on Route 228 in the Battle Zone.
All three Regis are level 30, so even a mid-level team can weaken them safely.
The Iron Ruins also hold a Metal Coat and a hidden Nugget.

Walkthrough: Part 20: Dialga, Palkia, Giratina and Regigigas

FAQ

Why won't the Regis appear in Pokémon Platinum?

The statues only react after the Hall of Fame when you have an event Regigigas in your party and have stepped on all seven floor dots.

Where is Regice in Platinum?

In the Iceberg Ruins inside Mt. Coronet, through the room near the Route 216 exit.

What level are the Regis in Platinum?

Regirock, Regice and Registeel are all level 30.

Sources & picture credits

Guide text is original retrogameindex writing, checked against Bulbapedia and the game data. Wild Pokémon and encounter chances, items, trainers, rematch teams, gifts, trades and shops come from the pret/pokeplatinum decompilation, and the Pokémon and trainer sprites are drawn from the game’s own graphics in it. Location pictures © Nintendo / Creatures / GAME FREAK, archived from the Pokémon Wiki on Fandom (listed on the image gallery).