Playing takes four steps: sign up, gather a team if the game needs one, enroll in the game and enter it. After that everything happens on a single page: the task, the answer box and the hints.
The registration works for all the game sub-domains: sign up on one of them and you log in to any of them with the same account.
Not much of it is required: a login, a password and the e-mail your password is recovered through. The phone number is not always needed — the organizers of city games ask for it so that they can reach the team out on the route.
Once you have signed up, you can already play single-player games.
Team games need a team. Your own is created by giving it a name; you join somebody else's through an invitation link — the captain hands it out, and it also sits in the team information page.
The game card first carries the “Enroll” button. The organizer accepts the application — by hand in some games, automatically in others — and “Enter the game” appears in its place. The button starts working once the game has begun.
Everything you need while playing is on one page: the level name and the answer box at the top, the task text below it, and under that the hints, which open on a timer or are taken by a button for a penalty.
The page never reloads: an answer leaves and comes back in place, and the “Previous answers” list remembers what has already been tried.
The looks are set by the author of the game: colours, fonts and images differ from game to game, but the answer box and the hints always stay where they are.
City games are played from a phone, and the level page is built for a narrow screen: the same answer box on top, the same text underneath.