Shared-screen web games answer one particular need: two players, a single device, no installation.

How Split Controls Work
The first side typically is assigned the cursor keys and the second uses the WASD cluster. Attack inputs get placed nearby so neither side has to reach into their opponent’s opposite half.
What Kinds Work Best
Fighting games, track games with split screens, basketball titles, co-op adventures plus quick tabletop games.
The Reason Local Beats Online
No login, not one server delay, no connection issue, and no anonymous player unknown dropping into a game. Any conversation occurs within the room.
Just Started
Visit 6club, pick any co-op game, and the two players play at once. Nothing installs, and zero account is ever needed for either person.