First of all: This is a Chinese fan-made project. Not official merchandise, not genuine game, just for fun.

Here is what happened. I seemingly got the NS2 launch title Pokémon Emerald for only $14. The seller said he had exclusive access, and even claimed his friend worked on manufacturing NS2 game cartridges.

He sounded really confident. I thought if I could get this for $14, posting it online would blow up. He told me this was top secret, do not share it publicly, and he would send me more updates later.

Three days later I got the package. What was inside was nothing like what I expected. I thought the NS2 Pokémon Emerald box looked a little small… And it works perfectly on 20-year-old GBA and DS consoles! I get it now. Nintendo wants old players to enjoy this game. I want to ask everyone, did I get scammed?

The big reveal

Actually, I bought parts from two different stores and put them together: Cartridge: A modified Pokémon Emerald cart built on Chis Flash with RTC (Real-Time Clock) function. The original game was not ready yet, so I get to play early. It cost $11. Bought a regular GBA cartridge for $3 to hit the free shipping threshold. I really needed both carts anyway.

Box: A fan-made NS2-style GBA storage case from another shop. I originally planned to buy a normal case and found this by accident. The maker likes NS2 cartridge boxes and is a veteran GBA player, so he made this custom case. It uses a tape-style outer shell + 3D printed PLA inner tray + custom high-res cover art. Single unit costs $3.5, discount if you buy three. I also pretended I own GBA Dragon Ball: Advanced Adventure and Castlevania: Aria of Sorrow. Genuine physical copies of these three GBA games are very expensive right now. These are great for personal play!

Disclaimer: Sellers charge for handwork and technical work. In theory you can swap out the cart inside this case for any GBA game.

Lastly, for hardware mod fans, I share a comparison picture of chips used on different homemade GBA cartridges. What is fully integrated hard-packaged chip? What is COB soft-packaged “cow dung chip”? You can see the difference clearly. Decide yourself if it is for collection or casual play.

Quick info: Chis Flash is a well-known open-source GBA flash cart project from the Chinese homebrew community. People can order PCBs and solder it themselves. It focuses on RTC and low cost.