What jocuris trains and what it does not do

Seven categories, four age groups

The games are sorted by age group: 5 to 8 years (Discoverer), 8 to 12 years (Explorer), 12 to 16 years (Thinker), 16 to 20 years (Master). Within every category the challenge rises with age, and every game has three levels. A child who is faster takes the next level or the next tab. The age range is a recommendation, not a limit.

• Thinking Games: Logical thinking, Pattern recognition, Planning, Persistence
• Memory Games: Working memory, Concentration, Visual memory, Sequences
• Knowledge Games: General knowledge, Geography, Science, History
• Language Games: Vocabulary, Spelling, Foreign languages, Grammar
• Math Games: Number sense, Mental math, Equations, Speed
• Motor Skill Games: Fine motor skills, Hand-eye coordination, Reaction time, Steady hand
• Brain Training: Attention, Processing speed, Mental flexibility, Impulse control

No data, no accounts

The website loads no third-party fonts, scripts or images and sets no cookies. There is no sign-up, no chat, no online leaderboard and no advertising. Progress (stars and personal bests) is stored only in the browser of the device. Anyone who wants to delete it just clears the site data in the browser.

The read-aloud function in the games for the youngest uses only voices that are installed on the device. Network voices that would send text to third-party servers are deliberately not used.

In the classroom

All games run in the browser on a projector, a tablet or a computer. The fullscreen button in the game bar hides everything except the stage. Games with a fixed duration (Times Table Race, Color Trap, Reaction Grid) suit learning stations, the quiz formats suit partner work. Every game starts without sign-in and without waiting.

A note on the knowledge games: the questions are editorially checked, as of 2026. We welcome reports of errors at info@jocuris.com.

How the stars are earned

Every game awards up to three stars per round, depending on points, time or number of mistakes. The thresholds are set so that one star is reachable with concentration, two stars need practice and three stars are a real achievement. For each game the best star count and the personal best are stored, regardless of the level.