Greco Kara no Chousenjou! Eitango no Shima to Obaketachi Step 2 is an Edutainment game developed and published by Media5 for the Nintendo 3DS. It was released exclusively in Japan on November 06, 2013.
If you find a ROM that's encrypted, you need to use the Batch CIA 3DS Decryptor, created by Matif.
Not all games are fully compatible with Citra. If you do find a game that's not working, try using the latest PabloMK7 Citra fork, the continuation of Citra since its shutdown.
