Play Touhi-Ou King Colossus (English) Online

Touhi-Ou King Colossus came out for the Sega Genesis in 1992, developed and published by Sega. It was part of that wave of action games that tried to push the hardware with big sprites and ambitious ideas, though it never quite became a household name like some of its contemporaries.

You control a lone warrior on a quest to defeat massive, screen-filling colossi. The main goal is to explore a series of interconnected areas, find each giant boss, and bring it down. The signature mechanics involve climbing onto the colossi during combat, targeting specific weak points while avoiding their powerful attacks, and using a mix of sword strikes and careful positioning. The pacing is deliberate, with stretches of exploration punctuated by intense, demanding boss fights that require patience and observation. It feels like a tense, physical struggle every time you scale a moving giant and hang on just to get a few hits in.