SideQuest turns whatever city you're in into a playable mystery quest. An AI game master generates clues tied to real landmarks around you — it invents the story, never the places (everything is grounded on real Google Places/Wikipedia data). You verify each step with GPS and photo checks, earn XP, and play solo or as a squad of up to 6 with a different clue per player. Free web app, no download — works in any city on Earth.