Play Ikari no Yousai (Japan) on gb Online
Control two soldiers to navigate enemy fortresses, swap between them, and take down a central computer while managing ammo and health in this tactical run-and-gun game.

Ikari no Yousai, known as Fortified Zone in some regions, was released by SNK for the Game Boy in 1991. It arrived during a period when handheld games were often scaled-down versions of arcade or console experiences, but this one offered a distinct blend of run-and-gun action with light tactical elements. The game stood out for its two-character system, a feature not commonly seen in portable titles at the time.
You control two soldiers, one at a time, switching between them to navigate through enemy-filled fortresses. Your main goal is to destroy a central computer in each stage, fighting through soldiers, turrets, and vehicles along the way. Signature mechanics include swapping characters on the fly (each with unique weapons) and managing limited ammunition and health for both. The pacing is brisk, and the difficulty can be unforgiving, especially when both characters take heavy fire. It feels tense and strategic, demanding quick decisions amid constant danger.

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