Play Medarot 3 - Parts Collection - Z Kara no Chousenjou (Japan) Online

Medarot 3: Parts Collection - Z Kara no Chousenjou came out for the Game Boy Color in 2000, developed by Natsume and published by Imagineer. It was part of that wave of late-era GBC titles that really pushed what the hardware could do, with detailed sprites and a surprising amount of tactical depth, all squeezed onto a cartridge.

You play as a kid who collects and assembles Medarots, small customizable robots, from hundreds of interchangeable parts found or won in battle. The main goal is to build the strongest team and challenge other collectors in turn-based fights where positioning on a grid is crucial. You spend a lot of time in menus, swapping out arms, legs, and weapons to create specialized bots for different opponents; some parts are only obtainable through repeated battles or trading. The pacing is deliberate, almost methodical, and the difficulty can spike if your builds aren't optimized. It feels like solving a mechanical puzzle every time you enter a new fight.