A circle is a game — or rather the set of its traits. Where circles overlap sits what those games share, and only they: a trait in region A∩B holds for A and B, but not for C. Both the circles and the values in the regions are hidden.
- Every region shows its category — genre, year, studio… It is the value you have to guess
- Click a region and a list of that category's values drops down. A pick is not a move yet — you can change it or drop it
- The move is the “Guess” button. It lights up once every region has a value picked, or a game is named in any circle, and checks everything at once: that is one attempt
A game goes into a circle from its grid of covers. A wrong option disappears. Chosen values narrow the set of games. The set is picked so that exactly one game fits each circle.
The puzzle is the same for every player, guesses are unlimited, progress is kept in your browser. A new puzzle arrives at midnight.