1v1.lol is a popular Battle Royale construction game. Pair yourself with a real human player in a matter of seconds, and do battle! It shares a lot in common with Fortnite and similar titles. Put down floor panels, stairs, roofing and walls, and use them to shield yourself from your opponent. There are three modes to choose from: Just Build, Battle Royale, and Party. That last one is where you invite specific friends into a private game.
Use WASD to move
Use the left mouse button to shoot
Space to jump
Shift to crouch
Z, X, C, V, or Y to build