Everything I've built to mess about with. Old-school games you can play with friends in a shared lobby, a shelf of tower-defence and strategy builds, and a few things for settling an argument. All in the browser. Nothing to install, no account.
Open the lobby and send everyone the link. You all land in the same room, pick a game, sit down at a table. Chat while you wait for the slow one.
Two to six players. Play online with friends, pass one device around, or take on the computer.
The bigger single-player builds — globes, towers, mazes and conquest.
For when somebody has to take the bins out.