Everyone’s Gone is a Super Mario World survival horror game made by GamesInTweed that turns the familiar Mushroom Kingdom into something dark and unsettling. Mario wakes up alone in a strange version of his world—empty halls, broken lights, and something moving in the shadows. Players must explore a decaying castle packed with traps, hidden keys, and puzzles that reveal fragments of what happened here. But the real challenge isn’t just solving puzzles—it’s staying alive when you can’t fight back. The things lurking in the dark don’t stop, and hiding may be the only way to make it through. The game includes multiple save slots to help keep progress, three possible endings, and a tough New Game+ mode called Nightmare Mode with new threats and story paths. It also features original artwork and sound effects that add to the tense, eerie tone. You can play Everyone’s Gone for free right now on kbhgames.com, directly from your browser with no installation required.