From the dawn of civilization to the digital age, guess the most revolutionary and widely recognized inventions that changed the course of human history.
This list was researched and ranked by hand for Centumth. Entries near #1 are the names almost everyone thinks of first. Entries near #100 are true, a little obscure, and still fair if you think sideways. Sources below are the starting point — the final order can include small editorial calls so the daily puzzle stays balanced.
You can play this archive puzzle with five guesses, or reveal the complete ranking if you came here looking for the list. Revealing locks this puzzle — you won’t be able to play it afterward.
Outbound sources help you verify the ranking. The published order is Centumth’s.
The full Top 100
- #1The Wheel
- #2Light Bulb
- #3Telephone
- #4Automobile
- #5Airplane
- #6Printing Press
- #7Internet
- #8Computer
- #9Television
- #10Radio
- #11Camera
- #12Steam Engine
- #13Compass
- #14Clock
- #15Paper
- #16Pen
- #17Pencil
- #18Gunpowder
- #19Matches
- #20Battery
- #21Bicycle
- #22Train
- #23Boat
- #24Submarine
- #25Helicopter
- #26Rocket
- #27Flush Toilet
- #28Refrigerator
- #29Microwave
- #30Washing Machine
- #31Air Conditioner
- #32Sewing Machine
- #33Vacuum Cleaner
- #34Zipper
- #35Velcro
- #36Elevator
- #37Escalator
- #38Eyeglasses
- #39Telescope
- #40Microscope
- #41X-Ray
- #42Pacemaker
- #43Stethoscope
- #44Syringe
- #45Thermometer
- #46Band-Aid
- #47Penicillin
- #48Vaccine
- #49Anesthesia
- #50Typewriter
- #51Telegraph
- #52Smartphone
- #53Calculator
- #54Abacus
- #55Credit Card
- #56ATM
- #57Barcode
- #58GPS
- #59Satellite
- #60Laser
- #61Radar
- #62Sonar
- #63Scissors
- #64Mirror
- #65Umbrella
- #66Toothbrush
- #67Soap
- #68Toilet Paper
- #69Comb
- #70Razor
- #71Wheelchair
- #72Contact Lenses
- #73Hearing Aid
- #74Fire Extinguisher
- #75Smoke Detector
- #76Lock
- #77Key
- #78Screwdriver
- #79Hammer
- #80Drill
- #81Lawnmower
- #82Tractor
- #83Cotton Gin
- #84Assembly Line
- #85Transistor
- #86Microchip
- #87Drone
- #88LED
- #89Dynamite
- #90Steel
- #91Plastic
- #92Concrete
- #93Parachute
- #94Safety Pin
- #95Paper Clip
- #96Post-it Note
- #97Dishwasher
- #98Toaster
- #99Blender
- #100Iron
The full ranked list is included on this page. Use Reveal full 100 list to read it, or play the game above.

