The emulator can display both screens in real time, though it's also possible to show only one in fullscreen and assign a button to alternate between the two. As far as the controls go, you can use either the keyboard or an external gamepad. In terms of the touch controls for the lower screen, you can use the mouse directly to click wherever you want.
Citra supports a ton of games from the Nintendo catalog in both 2D and 3D, though the emulator particularly shines with the 3D titles, allowing for a more intense resolution that completely transforms some games, making it seem like they're not even from a handheld device. Pokémon Sun and Moon and The Legend of Zelda: A Link Between Worlds, for example, look amazing.
Citra is possibly the best and most advanced Nintendo 3DS emulator you can find. It's an open source project created by volunteers that lets you enjoy your handheld games on a desktop computer.
Download 5584 - Pokemon - White Version ROM for Nintendo DS(NDS) and Play 5584 - Pokemon - White Version Video Game on your PC, Mac, Android or iOS device! John GBA Lite – I personally tested this emulator and so far it runs GBA games smoothly and even support cheating, you might want to consider John GBA Lite as an alternative to My Boy. GBA Emulator for iOS. GBA4iOS – I tried this emulator, and I can say so far GBA4iOS is the best GBA emulator for iOS. Sadly there aren't many GBA emulators.
Citra: The best Nintendo 3DS emulator for PCHow To Download Pokemon Emulators
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The world of emulation never stops moving. While a few days ago we gave you a review of the impressive Cemu emulator for Wii U, today it's the turn of Citra, a fully functional emulator of Nintendo 3DS for Windows and Mac that can run games at 100% and scale the 3D graphics to display much higher resolutions that the console originals.