What does “Dax” mean?
A new word. An unfamiliar object.
Try this taskThree ways to keep track of the important clue.

The dog challenge combines word learning, route planning and tracking. Learn which symbols have names, find a way around a transparent barrier and remember the snack’s visible sequence of hiding places.
A new word can refer to the only previously unnamed symbol. A transparent wall lets you see the goal but still blocks movement. Tracking can ask about an earlier stop rather than only the last one, depending on the task profile. Read the question after observation carefully.
A new word. An unfamiliar object.
Try this taskThe goal is visible. Find the detour.
Try this taskTrack visible movements until the locations are covered.
Try this taskThree tests with five rounds each. You have one life: every round must be correct. Tests become harder automatically, from Light through Medium to Demanding. Before each test, take your time with the rules and example. Choose relaxed or sport tempo; the clock starts when you start the task.
Open one task and read its goal and example before starting. Training lets you choose the task profile and tempo.
Each task has five rounds. Training allows one wrong round; one-life challenges require all five to be correct.
Progress and records stay locally in this browser. There is no player account. Clearing this website’s browser data also removes the stored progress.
These are original game tasks, partly inspired by animal cognition research. The research notes link to the original papers and explain how our game ideas relate to them. Read the research notes.