Counterweight

Counterweight is a browser game built around one deceptively simple question: which of these two objects is heavier? It's harder than it sounds — human weight intuition tracks size far more than density, so a lot of the pairs will genuinely surprise you.

Modes:

• Classic — pick the heavier of two items, round after round.
• Guess the Weight — you're shown a single item and drag a log-scale slider (0.1g to 1 ton) to guess its exact weight, scored on how close you land.
• Daily Challenge, Endless, and Time Attack for different ways to play.

Track streaks, unlock achievements, and copy a shareable result to challenge your friends.

Free to play, no download, no login required.