Meritous 3DS

From GameBrew

Last Updated2017/08/19
TypeRole playing

This is a port of the game Meritous to 3DS. Meritous is a cross between a top-view dungeon crawler and a bullet-hell shoot-em-up, originally made by Lancer-X/ASCEAI.

This game is compiled using SDL 1.2 for 3ds after making small changes to the original code for running it on the 3DS (only added the 3ds romfs to store resources in the executable, changed the key mappings and changed to static to big arrays defined not globally to avoid a stack overflow).


In the zip there is a folder with the 3dsx, smdh and the xml (for target title selection) files inside, to be used with a Homebrew Launcher.

Fir the CIA build, you will also need a DSP dump on your SD card.

The game creates a Meritous subfolder inside the 3ds folder if doesn't exist. Here will be stored the gamesave.

User guide


Far below the surface of the planet is a secret. A place of limitless power. Those that seek to control such a utopia will soon bring an end to themselves.

Seeking an end to the troubles that plague him, PSI user MERIT journeys into the hallowed Orcus Dome in search of answers.


In Meritous, you control main character Merit, who travels through an enormous 3000-room labyrinth, the Orcus Dome, in order to find three artifacts called the PSI Keys, and restore them to their proper locations.

Although enemies fire copious amounts of bullets at you, you don't shoot back - instead, you have an attack called a PSI Circuit, which you charge up to unleash a shockwave that hits enemies and nullifies their shots. As you charge up the PSI Circuit, target reticules appear on nearby enemies, the circle indicating they're in range, and the cross indicating you've charged up enough to damage or kill them.

You can't just use the PSI Circuit as often as you want, though. After releasing it, there's a cooldown time before you can charge up again, and the longer you charge up, the longer you have to wait. Destroyed enemies leave behind PSI crystals you can use to upgrade three facets of your PSI Circuit- Circuit Charge (charge up faster), Circuit Refill (less cooldown time), and Reflect Shields.

When you have at least one level in Shields, a barrier is projected around Merit, which will deflect one bullet per shield level, before having to regenerate. As you upgrade Shields, the barrier becomes bigger, then shows multiple layers as it gets stronger.

Note: If you found the game to be too difficult, you can play in Wuss mode for a far more sombre gaming experience.


D-Pad - Move

A - Select, Use PSI

B - Activate tiles

X - Show artifacts

Y - Show shield meters

L - Open Help

R - Open map

Select - Exit

Start - Pause


meritous3ds3.png meritous3ds4.png

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Meritous 3DS v1.1 (Cid2Mizard)


Ver. 1.4.1 2017/08/19

  • Other minor tunings.

Ver. 1.4 2017/08/12

  • Fixed Endings and Credits text wrap.
  • Tuned maps scolling.
  • Compiled with fixed SDL lib that solves random missing sound starting the game (CIA format only).

Ver. 1.3 2017/05/29

  • Fixed dialogues text shown entering in boss rooms.

Ver. 1.2c 2017/03/22

  • Released another new build using the last version of SDL lib. Solved closing the game fom home menu and some problems of GPU freeze.

Ver. 1.2 2017/03/22

  • Released a new build using a fixed version of SDL lib that solves the screen flickering.

Ver. 1.1 2017/03/05

  • Using 400x240 resolution instead of 320x240 stretched (thanks to @asiekierka).
  • Fixed some bugs.

Ver. 1.0a 2017/02/26

  • Added CIA format.

Ver. 1.0 2017/02/26

  • First reelase in 3dsx format.


The original source is by Lancer-X/ASCEAI.

The 3ds port is based on the code of the dingoo port by 31, that has resized screen to 320x240.

This game uses the SDL 1.2 library for 3ds.

All the resources are included in the executable using romfs.

External links