How To Get the Latiasite/Latiosite in Pokémon ORAS

You will obtain the Latiasite (Alpha Sapphire) or the Latiosite (Omega Ruby) from Steven on Southern Island. This event is part of the main story, which makes the Mega Stone for Latias or Latios unmissable.

Note that each version of the game can only get one of these Mega Stones, so if you want both then you’ll need to trade between versions.

As for prerequisites, you just need to clear these requirements before you can get the Latiasite/Latiosite:

Beat the Petalburg Gym
Obtain HM03 Surf

Getting the Latiasite or Latiosite (Step-by-Step)

After you beat the Petalburg Gym, Wally will automatically take you back to Mauville City.

After that event, take the city’s eastern exit to leave Mauville and you will arrive on Route 118.

From that point, here’s how to get your Latias/Latios Mega Stone:

Step 1: Head east from Route 118’s entrance.

Heading east from Route 118’s entrance.

Step 2: Continue heading east past the Aroma Lady trainer. Wait for her to face the opposite direction if you want to avoid the battle.

Heading east on Route 118 and past the Aroma Lady.

Step 3: Keep going east until you arrive at the beach.

Arriving at the beach on Route 118.

Step 4: Continue east towards the shore and use Surf on the water.

Using Surf on Route 118.

Step 5: On the water, keep surfing east until you reach the shore on the other side.

Surfing towards the east side of Route 118.

Step 6: Once you disembark, head southeast on the beach and then continue towards the eastern side.

Heading to the southeast of the beach on Route 118.

Step 7: Keep heading east until you reach the end of the beach. Then turn north and head to the area of grass above the beach.

Reaching the end of the beach and heading to the grassy patch.

Step 8: You will immediately run into Steven, starting a short dialogue.

The game proceeds automatically from this point.

Talking to Steven on Route 118.

Step 9: Latios (AS)/Latias (OR) will then appear and a cutscene will play.

Latias appearing on Route 118.

Step 10: After the cutscene ends, you will arrive on Southern Island.

From here, head to the north part of the island, up the hill.

Walking to the north part of the island.

Step 11: Continue into the clearing on the north part of the island.

Heading into the clearing on Southern Island.

Step 12: Keep going north and you will find Latias (AS) or Latios (OR) at the end of the clearing.

Once you reach the Pokémon, the game will proceed automatically with another cutscene.

Latios waiting at the end of the clearing on Route 118.

Step 13: An evil team Admin will show up with a grunt and challenge you to a doubles battle. Steven will join as your partner with a level 35 Metang.

The evil team members have:

A level 29 Koffing
A level 31 Sharpedo/Camerupt

Battling the evil team’s duo on Southern Island.

Step 14: After the battle, Latias/Latios will join your party.

Latias and Latios will also have their respective Mega Stone equipped automatically. So this is when you’ll get your Latiasite or Latiosite.

Latios carrying a Latiosite and joining the player’s party.

Latiosite’s item description.

Are Mega Latias/Mega Latios Worth Using?

Mega Evolving Latias during a battle.

Yes, Mega Latias and/or Mega Latios are worth using in your playthrough.

They are the second-best Megas available in the main story, behind Mega Blaziken.

Mega Latias has a varied movepool and well-rounded stats, leaning towards defense. Even so, Mega Latias can still be an effective special attacker in a main story playthrough.

These are Mega Latias’ base stats:

Ability	Levitate
HP	80
Attack	100
Defense	120
Sp. Attack	140
Sp. Defense	150
Speed	110

Mega Latios also has a wide movepool and very good stats, leaning towards offense. It is one of the best special sweepers for a main story playthrough.

Mega Latios has the following base stats:

Ability	Levitate
HP	80
Attack	130
Defense	100
Sp. Attack	160
Sp. Defense	120
Speed	110

Both Mega Latias and Mega Latios are also good options for a single-player playthrough & for competitive teams in Gen 6.

Mega Latios is usually considered slightly better, and it functions as a special sweeper.
Mega Latias slides into a support-oriented role with some offensive upside.