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Mini games30 games

Simulations47 simulations

Featured

Hand-picked by the Astra team

BiologySimulation4.812,213 ratings481,166 views

Human Body Atlas

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

PhysicsSimulation4.82,214 ratings114,248 views

Rocket Workshop

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

PhysicsSimulation4.81,900 ratings129,048 views

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

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Top picks

Most popular

1. Human Body Atlas481,166 views
2. Cell 3D204,928 views
3. Build a Cell133,319 views
4. Solar System129,048 views
5. Rocket Workshop114,248 views

Top rated

1. History Atlas4.8974 ratings
2. Cell 3D4.83,539 ratings
3. Solar System4.81,900 ratings
4. Human Body Atlas4.812,213 ratings
5. Virtual Lab4.81,090 ratings

New apps

Fresh this month

General4.614 ratings

Duck Drift

Drop a duck in the sea and watch real currents carry it for years.

Physics413 ratings

Spring Studio

Pull, release, and discover the rhythm of a spring.

Chemistry4.411 ratings

Pressure Studio

Move a piston, compare molecular speeds and investigate diffusion.

General4.991 ratings

First Aid & Survival

Learn CPR, first aid and survival skills, step by step in 3D.

Factoring

Learn the tools that split a polynomial into factors.

Physics53 ratings

Tide Pool

Drop a block. Watch the water push back.

Physics4.7123 ratings

Inside the Earth

Dive to the center of the Earth and watch quakes reveal its core.

History4.915 ratings

Colosseum

Dive inside the Colosseum, then watch 2,000 years wear it down.

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Chemistry8 apps

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