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Mini apps for curious minds

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Mini games29 games

Simulations39 simulations

Featured

Hand-picked by the Astra team

BiologySimulation4.811,661 ratings450k

Human Body Atlas

Explore, isolate, and take apart thousands of anatomical structures.

PhysicsSimulation4.82,116 ratings110k

Rocket Workshop

Build a rocket, launch it and find out what it takes to reach space.

PhysicsSimulation4.81,804 ratings123k

Solar System

Explore the planets, the Moon's phases, and eclipses in one 3D model.

Today's puzzles

+20 Stars each

Logic Gates

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Sudoku 9×9

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15 Puzzle

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Nonogram

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Guess the Equation

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Geography

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Pipes

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Hashi

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Marbleslides

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Minesweeper

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Chess

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Points for where you place in each of today's puzzles

Today's puzzles

220

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Top picks

Most popular

1. Human Body Atlas449,628 views
2. Cell 3D193,433 views
3. Build a Cell128,764 views
4. Solar System123,061 views
5. Rocket Workshop110,319 views

Top rated

1. History Atlas4.8902 ratings
2. Solar System4.81,804 ratings
3. Cell 3D4.83,314 ratings
4. Human Body Atlas4.811,661 ratings
5. Virtual Lab4.81,017 ratings

New apps

Fresh this month

Chemistry4.730 ratings

Periodic Table 3D

See trends rise as 3D towers, then fly into any atom.

General52 ratings

How LLMs Work

Be the model: split text into tokens, guess the next word, set the temperature.

Math4.819 ratings

Programming & CS

Guide a robot with blocks, then write real Python.

Math4.88 ratings

Coordinate Defense

Build at (−3, 4), read the camps, hold the keep.

Math4.6176 ratings

Fruit Fractions

Show me 3/5 of the orange, then see why.

Math4.6121 ratings

Linear Beam

Write the line, fire the laser, light every crystal.

General4.8205 ratings

World Landmarks

Spin the globe and explore famous landmarks up close.

Math4.6335 ratings

Mental Math

Times tables practice that remembers what you know.

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Chemistry7 apps

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