The single most underrated category in browser games is the one where two people share a keyboard. No lobby, no invite link, no second device. One person takes the arrow keys, the other takes WASD, and that is the entire setup.
What makes a good one
The good ones share three traits: a round lasts under a minute, the controls are one or two keys per player, and the physics are silly enough that losing is funny. Anything that needs precise timing on a shared keyboard turns into an argument about who pressed what.
Where to find them
Several of the games in our catalogue are two-player on one keyboard — the sports-with-ragdoll-physics genre is particularly well served. Because our shuffle draws at random, the fastest way to find them is usually to press the button a few times with someone sitting next to you.
They also work well as tiebreakers. Agree to accept the result before you press, and let the shuffle decide what you are competing at.