Paper Mario: the Origami King is part platformer, part collectathon, and part open-world game that brings them all together with a unique papery look. There are tons of hidden objects in the newest Paper Mario, keeping players scouring the levels for collectibles. The Graffiti Underground is a fairly short part of the game, but it has several hidden treasures for players to pick up.

The Graffiti Underground

The Graffiti Underground is the sewers that connect Toad Town and Peach's Castle. Along with all the Toad Town collectibles, players will have to find a hook to open the sewer grate in Toad Town. These tunnels will have two toads, one collectible treasure, two question mark blocks, and five not-bottomless holes.

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Not-Bottomless Holes

Not-bottomless holes are holes players can fix with confetti. A holdover from Color Splash, the confetti system is one of the things that could be improved in the Paper Mario: the Origami King. However, players that want to complete the game 100% will need to fill all these holes in.

The first one is located to the left of the ladder as soon as Mario enters the Underground:

Paper Mario Graffiti Underground Hole 1

In Paper Mario: the Origami King's Graffiti Underground, the second and third Not-Bottomless Holes are located down the stairs where the pipe and the treasure chest are. One is on the walkway, and the second on the back wall by the light to the right:

The 2nd and 3rd holes in Graffiti Underground

Past not-bottomless hole 3 is a hallway lined on one side with water. Walk all the way to the end near the talking box and find the next hole:

Hole number 4 in the Graffiti Underground

The final hole is literally blocking Mario's path, so it's impossible to miss:

Last hole in underground

There are plenty more not-bottomless holes in the world, so make sure to fill up on confetti from Paper Mario's world around Mario.

Question Mark Blocks

There are two total question mark blocks in the Graffiti Underground. The first is right when Mario turns the lights on in the first tunnel down. There will be two scaredy rats and one block with a mushroom.

First ? block in Graffiti Underground

The second is right near the 3rd and 4 not-bottomless holes. It will be invisible, and at the end of the upper walkway:

The second question block in Graffiti Underground

Collectible Toads

There are two toads to find in the Graffiti underground. One is inside the talking box right next to the third not-bottomless hole:

Paper Mario Origami King Toad Underground

The second toad, players are forced to interact with, so they can't miss it:

2nd toad in Graffiti Underground

Number 16: The Manhole Cover

The last thing players will need to collect in the Graffiti Underground is the Collectible Treasure. Thankfully, it's not the inappropriate Easter egg Treasure that players have been giggling at. Once the water in the Underground is drained, players will be able to collect the Number 16 treasure from where the water was. Here's a quick video of how to get it:

If players are looking to see the secret ending of Paper Mario: the Origami King, they are going to have to get all collectibles and 100% the game, so make sure not to miss a single one.

Paper Mario: the Origami King is available for the Switch.

MORE: How to Turn Off Motion Controls in Paper Mario: The Origami King

Source: Polygon, Youtube