What you need:

• PSP Emulator PPSSPP
• Copy of Nichijou Uchuujin ROM
• DLC files from archive.org

The DLC files can be get at the following site: https://archive.org/details/nichijou-uchuujin-dlc-hijitsu-hanafuda

Instructions:

• Add the content of the GAME folder to the corresponding folder PSP/GAME in the PSP memory stick.
• (If needed add the LICENSE file of the game to its folder).
• Open the game as normal and navigate to the mode in the start menu "非実在花札".

VIDEO INSTRUCTIONS