So here we have another RARE cartridge from ATLUS that looks like the brother of the Tamagotchi V3. OSUCHI & MESUTCHI GAME BOY JAPAN made by BANDAI.
Robopon cartridges have an Infrared panel on their top edge that allows them to trade information using waves much like a TV or VCR remote, allowing the cartridge to react to different objects. For example, pointing a remote control at the cartridges and pressing a button might boost the Robopon’s stats, or open a chest within the games. This feature was called the “GB Kiss”. The game included over 150 different Robopon to use, with the first 2 releases and then over 168, with the release of Moon version, though some had to be upgraded, similar to Pokémon’s evolution stages. The Robopon were classified as either Arm, Move, or Boot. Arm tended to have high offense, Move were fast, and Boot had the highest stats overall.
An internal clock is built in and will notify you of time-sensitive events.

ROBOPON game cartridge

Inside ROBOPON... Notice the two infrared at the top of the PCB
So gunna get a copy of this. I love this site, it provides me with details of carts I didn’t know existed! Great for helping fill out my collection with rarer carts.
Hello Nathan, glad to know that you like this website
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Cheers!
Do you have a better photo of the internals and/or the chip model IDs written down?