How to play

Tap or click anywhere on the map to set ground zero, then set the asteroid's diameter, speed, angle and composition and hit LAUNCH. The impact report shows the crater it leaves behind, the energy released in kilotons or megatons of TNT, how many Hiroshima bombs that equals, and how far the blast reaches.

Start small: drop a modest asteroid on an empty stretch of ocean or desert and look at the numbers, then try the same rock bigger, faster, or steeper and compare. Speed matters as much as size, and a steeper angle drives more energy into the ground and digs a bigger crater.

Where you aim does not change the result. The target only sets ground zero on the map, so the report comes from the asteroid itself, not from where it lands. There is no score and no way to lose; the fun is seeing how much chaos a single rock can cause. Hit Launch another after the report to pick a new target and try again.

FAQ

What can I change about the asteroid?: Four things: diameter from 10 to 1,500 metres, speed from 11 to 72 kilometres per second, entry angle from 15 to 90 degrees, and composition, iron, stone, carbon, gold, or a comet made of ice.
What does the impact report show?: Impact energy in TNT equivalent, how many Hiroshima bombs that equals, the crater's width and depth, fireball radius, heavy blast radius, thermal radiation radius, the equivalent earthquake magnitude, and an estimated casualty count.
Does where I aim change the result?: No. The target only sets ground zero on the map. The report is calculated from the asteroid's size, speed, angle and composition, so the same rock gives the same numbers anywhere on Earth.
Are the numbers real?: No. This is a simplified physics toy, and the numbers are playful estimates, not a real impact model. Treat them as a way to compare asteroids, not as a prediction.
What do the casualty numbers assume?: They are a playful estimate that assumes the asteroid hit a populated city. An impact in empty ocean or desert would look very different in real life.
What makes the biggest impact?: A big, fast, steep asteroid of a dense material. Gold is the densest choice in the game, so the same size rock hits hardest as gold and softest as a comet made of ice.

Tips

Start small: drop a modest rock on empty ocean or desert and read the numbers before going big.
Change one slider at a time so you can see what each setting does.
Compare a small, fast asteroid against a big, slow one. Speed matters as much as size.
Try the same asteroid as gold and as a comet. The dense one hits much harder.

ASTEROID LAUNCHER GAME

Pick your target

Impact report

How to play

FAQ

Tips

Pick your target

Impact report

How to play玩法说明

FAQ常见问题

Tips技巧

How to play

FAQ

Tips