Install DeSmuME
DeSmuME is available officially on Windows (x86/x86-64/x86 without SSE2) and Macs (x86/x86-64 and PowerPC), but its source code is also available for anyone who’d like to port it elsewhere. Because of this, you can find ports of it even for the Xbox and PlayStation. Thus, it was almost a given it would find its way to Linux. You can find DeSmuME in many distributions’ official repositories, making its installation an easy affair.
Ubuntu/Debian
You can find DeSmuME on Debian’s and Ubuntu’s official repositories. Install it with:
Arch / OpenSUSE / Solus Linux
DeSmuME’s installation on Arch, OpenSUSE, or Solus Linux is as easy as as it is on Debian and Ubuntu. For Arch, you can bring it on board with: On OpenSUSE, you can install it with: Finally, to install it on Solus, try:
Fedora
Fedora is one of the distributions that doesn’t include DeSmuME in its repositories. Thankfully, RPM Fusion does. To install DeSmuME, you first have to add this unofficial source of software to your repositories list. Do this with: The actual installation only needs:
Playing Games
There are two ways to get Nintendo DS games on your Linux PC, and only one of them is legal. The first is to make backups of your DS games using a flash cartridge. The other – and much easier – way is by downloading them. Unfortunately, this is outright illegal in many countries but falls within a legal gray area in others. When, one way or another, you have a game you want to play as a ROM in “ds” format, fire up DeSmuME, then click on the first icon in its toolbar and select your game’s file. The game you chose will load and run automatically. Depending on the game, you may need to use your mouse on the emulated DS’s second screen (it’s the bottom one by default) or press some buttons to play. The Nintendo DS’s keys directional cross is mapped to the cursor keys. Its A, B, R, L, X, and Y buttons are, respectively, mapped to X, Z, W, Q, S, and A on the keyboard. Finally, the Start and Select controls are by default mapped to Return and the right Shift key.
Control Remapping
If you don’t like DeSmuME’s default controls, you can remap them to other keys by paying a visit to “Config -> Edit controls.” To remap any control to a different key, click on it, then press the new key corresponding to this action. We find it’s better to use a mouse and keyboard combination for the games that use the DS’s touch screen. However, many DS games only utilized the second screen as a display, not extra input. Those games feel better with a joypad, closer to the original button arrangement of the DS. DeSmuME works with most generic joypads that are already usable on your PC. Those controls are also re-mappable if you don’t like the defaults. You can alter them from “Config -> Edit Joystick controls.”
Screen Control
The DS had one screen under the other, and most of its games are designed for this screen orientation. Some weren’t, though, and treated each screen as an independent display. With those games, you can take better advantage of the widescreen estate on your PC by rearranging DeSmuME’s screens next to the other. You can do that from “View -> LCDs Layout -> Horizontal” or by pressing Ctrl + 2 on the keyboard. Return to the vertical orientation from this menu or by pressing Ctrl + 1. DeSmuME also allows you to swap the screens from this menu or by pressing Space, useful when you care more about the secondary screen’s input than a passive display on the main one. Finally, for the rare games that didn’t use the secondary screen, you can set the emulator to display only one screen. Either choose the “Single screen” option from the same menu or press Ctrl + 0 on your keyboard. You probably have an HD monitor on your PC, and DeSmuME’s output will look like thumbnails on your screen. You can change the virtual screen’s size from “View -> Window Size” and then select a multiplier from that sub-menu. 1x means native size and is the default. Higher multipliers will enlarge the virtual screens. Scale to window will “free” the multiplier to match the size of the emulator’s window. Due to the way LCD screens work, it’s better if you choose an even multiplier. Both odd and even multipliers will look blocky, but on top of that, odd ones introduce increased artifacting. There’s a way to minimize the blockiness by using filters. DeSmuME offers you a collection of filters, accessible from the “View -> Video Filter” sub-menu.
Performance & Save States
DeSmuME is a relatively old emulator, and you probably won’t have any problems with performance on a modern PC. If you do, when on an older or under-powered PC, you can improve the emulator’s performance by skipping frames. The option is accessible from “Config -> Frameskip” and is set initially to 0 (never skip). The emulator will display fewer frames by choosing an increased value, thus “speeding up” the game. Those frames will be missing, though, resulting in choppier animations and scrolling. After a point, this option ends up useful only in slow, mostly static games, like RPGs and adventures, since everything else with real-time controls will be unplayable. Playing most games wouldn’t be of much use if you couldn’t save your progress. First, in most games you can actually use the built-in save features to save data in DeSmeME. Play your game like you normally would and save your data. You’ll be able to load it next time. Still, some of those are limited – you may only be able to save at particular points in the game. There is another way to save the state of the game directly through DeSmuME. Choose “File -> Save state” and one of the ten slots to save the game’s current state into a file. To recall the saved state, choose “File -> Load state” and the saved game’s slot. It’s also worth noting that DeSmuME allows you to record audio and video from your games through the appropriately named “File -> Record video/audio.” You can also take screenshots from the “Take a screenshot option” that follows or by pressing Ctrl + S while playing. Now that you know how to play Nintendo DS games on Linux, next you can install DOSbox to play old DOS games or play PSP games with PPSSPP.
