A ROM is essentially a virtual version of the game that needs to be loaded into the emulator. But now you’ll need to find the correct ROMs online. Your emulator will now be ready to play Pokemon Oras rom. After, double click the citra-setup-windows.exe file in order to start the emulator. 7z file to a location, for example your Desktop. Once you have finished downloading Citra, extract the downloaded. We’d suggest Citra – it’s open source, fast and one of the most frequently updated. Step 1: you can start by downloading a reliable and bug free emulator. The second component is the Pokemon Oras rom itself to play on the emulator. The first component is the emulation program which can imitate the 3ds OS and software. There are two components for playing a 3ds Pokemon Oras rom on your PC.