INNER SPACE: THE SULFUR SENTINEL

Pilot the submarine that escorts EGT, our sulfur-bearing hero, through an aging roof rat. EGT can do five remarkable things. But he has four real limits… and the game teaches them by letting you bump into each one. No gate, no friend, no NAD recharge, no place for him to go. ← All Roof Rat Adventures

🧬 Want the real science? Read Ergothioneine (EGT) for Rats: Could It Be Their “Taurine”?, the cited, honest rundown behind this game.