• Pro Difficulty
  • All 24 Per game
  • 40 rounds Round limit
  • Unlimited Games allowed
  • Hidden Computer's card
  • On Card drafting
Demo mode. You can try the game as often as you like, but nothing is saved: the game is not graded, does not count towards completion and disappears when you leave.

Your games

You have not finished a game here yet.

Grading method
Best score

The card deck 24 cards

Everyday Metals

Iron (Fe)

  • Atomic number 26
  • Melting point 1538 °C
  • Density 7900 kg/m³
  • Discovered (lower wins) -3000
  • Earth's crust 56300 ppm

Did you know? The Earth's core is mostly made of iron.

Everyday Metals

Aluminium (Al)

  • Atomic number 13
  • Melting point 660 °C
  • Density 2700 kg/m³
  • Discovered (lower wins) 1825
  • Earth's crust 82300 ppm

Did you know? Aluminium was once more expensive than gold.

Everyday Metals

Copper (Cu)

  • Atomic number 29
  • Melting point 1085 °C
  • Density 9000 kg/m³
  • Discovered (lower wins) -3000
  • Earth's crust 60 ppm

Did you know? Almost every cable in your house has copper inside.

Card gallery See all 24 cards

What you will compare

Every card carries these categories. On your turn you pick one and hope your value beats the card you cannot see.

  • Atomic number Higher wins 1 – 92
  • Melting point Higher wins -272 °C – 3550 °C
  • Density Higher wins 0.1 kg/m³ – 21500 kg/m³
  • Discovered Lower wins -3000 – 1898
  • Earth's crust Higher wins 0.004 ppm – 461000 ppm