Pokémon Mystery Dungeon DX: Complete Mystery House Guide, Finding Riolu

From getting your hands on Invitations to finding Riolu, this is your complete guide to Mystery Houses in Pokémon Mystery Dungeon DX.

Potentially quite early in Pokémon Mystery Dungeon Rescue Team DX, you’ll encounter one of the many items in the game simply called an ‘Invitation.’

An Invitation is detailed as being from an unknown sender, with you being invited to put it in the mail slot of mysterious rooms that can sometimes be found in dungeons.

These mysterious rooms are known as Mystery Houses in Mystery Dungeon DX, and they contain some incredible rewards and very rare Pokémon, such as Riolu, if you’ve brought an Invitation with you.

Here’s what you need to know about how to get Invitation items in the game, how to find a Mystery House in a dungeon, and what special Pokémon you can find in the Mystery Houses.

How to get an Invitation in Mystery Dungeon DX

Your best bet to land yourself an Invitation is Kecleon’s Shop. The stall is found on the way into town; speak to the Kecleon on the left (the green one) every day to see if it has an Invitation for sale.

The Invitations cost 1,000 each, so while it’s one of the more expensive items, it’s certainly worth buying whenever you see one.

The presence of an Invitation in Kecleon’s Shop is completely random, with the shop resetting whenever you go to sleep in the game.

Perhaps the best way to stack Invitations is still a long-winded process: embark on adventures to dungeons with a low number of floors and just one or two missions to complete.

These are the quickest and easiest rescue missions to complete, so finish one, return home as soon as you’re done, go to sleep, check Kecleon’s stock, and repeat.

You should be able to accumulate a fair few Invitations while you’re trying to complete the main story of Pokémon Mystery Dungeon: Rescue Team DX, and you won’t need to use them until after you see ‘The End’ come up on the screen.

How to find a Mystery House in Mystery Dungeon DX

While you may be able to get one or several Invitations while you’re working your way through the main story of Mystery Dungeon DX, you won’t be able to use them until you’ve completed the story.

Mystery Houses don’t appear in dungeons until you’ve finished the story and returned to the game for the post-story content.

Once you’ve finished the campaign, loads more dungeons open up to you, most of which are key to catching the best and rarest Pokémon in the game.

When exploring these new dungeons, you could find yourself stumbling upon a Mystery House.

The problem is that you can’t see anything on the map in the post-game, so you don’t even know where enemies or items lay to get an idea of the boundaries of the dungeon.

This is why you should equip your leader Pokémon with X-Ray Specs as they reveal the locations of items and Pokémon in the dungeon.

The Mystery House will appear at random, in a random area of a random floor.

As you can see on the image below and in the one at the top of this section, the Mystery House takes up a fair bit of space and does show a very distinct shape, but it can pop-up anywhere.

So, when you’re exploring dungeons after completing the main story of Mystery Dungeon DX, be sure to reveal the whole map of each floor just in case there’s a Mystery House around.

How to enter the colourful house in Mystery Dungeon DX

You’ll know that you’ve found a Mystery House in Pokémon Mystery Dungeon: Rescue Team DX when you see a large house with a pink roof, orange and yellow doors, and green features.

When you see the Mystery House, you need to go up to the orange and yellow doors and then press A.

If you’ve brought an Invitation with you, you’ll be prompted to insert the Invitation into the slot.

Once you accept, your Pokémon will push the invitation through the door, opening the Mystery House and revealing all of the rare items and the rare Pokémon within.

Of course, to achieve any of this and to open the Mystery House, you’ll need to have an Invitation on you at the time.

Invitations don’t work in the same way as mission items, like certain berries and apples, where you can find the item on the relevant floor: if you don’t have an Invitation there and then, you won’t be entering the Mystery House.

If you don’t have an Invitation, see if you’ve picked up a Storage Orb as using it will allow you to access Kangaskhan Storage in town to retrieve an Invitation if you have one stored.

What can you find in Mystery Houses in Mystery Dungeon DX?

Once you’ve posted the invitation through the slot of the Mystery House, it will open up, and you can enter.

Upon entry, you’ll notice several high-value items, such as orbs, revive seeds, and chests, as well as a rare Pokémon.

If you speak to the Pokémon, it will immediately ask to join you on your journey. So, while you don’t have to defeat them to get them on your team, you may need to make space by booting a current follower.

Despite being randomised, Mystery Houses are among the best ways to get some of the rarer Pokémon to join your team.

Almost all Pokémon found in a Mystery House can otherwise only be found by evolving up to the Pokémon or by randomly finding it fainted in a dungeon.

In some cases, finding a Pokémon in a Mystery House is the only way to get them to join your team – as is the case for Riolu and Lucario.

The fan-favourite Pokémon is about as hard to find in Mystery Dungeon DX as it is to find Riolu in Pokémon Sword and Shield.

While the occurrence of certain Pokémon in Mystery Houses isn’t fully understood, Game Master managed to find a Riolu many floors down in the Buried Relic dungeon.

To guarantee that you can make the most of these rare encounters, you’ll want to make sure that you already have unlocked all of the Rescue Camps that you need to allow the Pokémon to join your rescue team.

All rare Pokémon found in Mystery Houses in Mystery Dungeon DX

Here’s a list of all of the rare Pokémon that you can find in Mystery Houses in Pokémon Mystery Dungeon: Rescue Team DX:

PokémonTypeRescue Camp
IvysaurGrass-PoisonBeau Plains
VenusaurGrass-PoisonBeau Plains
PrimeapeFightingVibrant Forest
SeakingWaterRub-a-Dub River
SnorlaxNormalVibrant Forest
BayleefGrassBeau Plains
MeganiumGrassBeau Plains
UmbreonDarkEvolution Forest
CelebiPsychic-GrassHealing Forest
GrovyleGrassOvergrown Forest
SceptileGrassOvergrown Forest
PelipperWater-FlyingShallow Beach
ExploudNormalEcho Cave
AggronSteel-RockMt. Cleft
SwalotPoisonPoison Swamp
MiloticWaterWaterfall Lake
RoseradeGrass-PoisonBeau Plains
MismagiusGhostDarkness Ridge
HonchkrowDark-FlyingFlyaway Forest
RioluFightingMt. Discipline
LucarioFighting-SteelMt. Discipline
MagnezoneElectric-SteelPower Plant
ElectivireElectricPower Planet
TogekissFairy-FlyingFlyaway Forest
YanmegaBug-FlyingStump Forest
LeafeonGrassEvolution Forest
GlaceonIceEvolution Forest
GliscorGround-FlyingMt. Green
MamoswineIce-GroundFrigid Cavern
Porygon-ZNormalDecrepit Lab
GalladePsychic-FightingSky-Blue Plains
ProbopassRock-SteelEcho Cave
DusknoirGhostDarkness Ridge
FroslassIce-GhostFrigid Cavern
SylveonFairyEvolution Forest

So, if you’ve finished the main campaign of Pokémon Mystery Dungeon: Rescue Team DX, be sure to have plenty of Invitations on you when you go out on rescue missions as you can find more than one Mystery House in any given dungeon.

Looking for more Pokémon Mystery Dungeon DX Guides?

Pokémon Mystery Dungeon DX: All of the Available Starters and the Best Starters to Use

Pokémon Mystery Dungeon DX: Complete Controls Guide and Top Tips

Pokémon Mystery Dungeon DX: Every Wonder Mail Code Available

Pokémon Mystery Dungeon DX: Complete Camps Guide and Pokémon List

Pokémon Mystery Dungeon DX: Gummis and Rare Qualities Guide

Pokémon Mystery Dungeon DX: Complete Item List & Guide

Pokemon Mystery Dungeon DX Illustrations and Wallpapers

Ben Chopping

Will give almost any game a chance, particularly those that include wildlife, monsters, or prehistoric creatures of any kind.