Power Clash

Which carries more energy? Which is bigger, heavier or faster? Choose your winner in 114 selected browser-game comparisons, from projectile impacts and nuclear yields to hot materials, record runs and cosmic surprises.

How to play

Read the question, select one of the two illustrated cards and reveal the values. Ten rounds form a run. Correct guesses extend your streak, and your best streak saves in this browser. Each run asks ten different question types and uses twenty distinct cards. Quantities and conditions appear before your choice.

Models and sources

This is a comparison game, not a combat simulator. Each question specifies a metric. Numerical models use stated assumptions; they do not predict damage or casualties. The sources panel explains the current cards. Astronomical figures use NASA planetary data; earthquake energies use a USGS approximation. Projectile and battery examples are explicitly defined scenarios. Material properties use RSC and USGS references.

Controls

Click or tap a card. Use Tab and Enter to choose with a keyboard. Play online free with no signup and no download.