While the official server exists, some of the best lists feature high-performance mirrors of 1v1.LOL . This game mimics the building mechanics of Fortnite but simplifies them into a 1v1 duel. Because it runs on WebGL, you get console-quality graphics directly in your tab. The learning curve is steep—you will need to master ramp rushing and quick edits—but the dopamine hit of out-building an opponent is unmatched.