Play Jikuu Yuuden - Debias (Japan) Online

Jikuu Yuuden: Debias came out on the Nintendo Entertainment System in 1987, developed and published by Namco. It was part of that wave of late 80s NES games that tried to blend action with deeper, more puzzle-oriented exploration, standing out with its time travel premise without ever becoming a major hit outside Japan.

You control a party of adventurers who jump between different eras, switching characters on the fly to use their unique weapons and skills during real-time combat. The main goal involves navigating maze-like environments, solving environmental puzzles where altering something in the past directly changes the layout or obstacles in the present. The pacing is deliberate, and the difficulty comes from managing your party's health and figuring out the often non-linear progression. It feels like untangling a knot where every pull on the thread matters.