The game does not end when the first player arrives. It ends when you both do, and whoever got there first waits on the last square and claps the other one in.
Nothing counts wins. No tally of who has won more is kept anywhere. Between a brother and a sister that is not a scoreboard, it is a grievance.
It saves nothing. No account, no sign-in, no advertising and no purchases. Only the language and sound settings stay on this device.
Nothing hurries a child who is thinking.
What you need
One tablet and two people. It opens in a browser: nothing to install, nothing to sign up for. Whoever is sitting with them is welcome.