The periodic table

Inventions

We use these items every day, but have you ever wondered when they actually came to be? In this captivating tech-history quiz, line up everyday objects by the time of their invention. Which came first—the steam locomotive or the electric battery? How many decades passed between the invention of the tin can and the can opener? And when did the first electric car hit the road? The answers aren't as obvious as they seem. Trace human engineering from the dawn of mechanization to the first AI neural networks—and prepare to be surprised!

Nobel prizes

Behind every Nobel laureate lies a breakthrough that permanently altered our understanding of physics, chemistry, medicine, and the cosmos. This science quiz asks you to line up legendary scientists and researchers by the year they received the world's premier award. Follow the evolution of science: from the discovery of X-rays and atomic structure to decoding DNA, quantum physics, and modern genomics.

Car models

Raw horsepower, sleek body curves, and the smell of fine leather. This auto quiz invites you to a virtual showroom featuring iconic models from the past 150 years. Arrange legendary cars by their debut year—from clunky horseless carriages to groundbreaking electric vehicles.

Geography: longitude of objects

In this unique geography quiz, arrange famous places—iconic streets, famous buildings, and global landmarks—from west to east in order of increasing geographic longitude (from -180° to +180°). It's a fantastic spatial-reasoning workout and a chance to test how accurately you visualize the real map of our planet.

Height of buildings and structures

A tall order for architecture fans! Your goal is to rank structures by height: from ancient Egyptian pyramids and classical lighthouses to monumental statues, broadcast towers, and Arabian skyscrapers. Note: sculpture and statue heights are calculated strictly without their pedestals!