Today’s thinker
Rodin's The Thinker
The brand anchor. Literally Think Hard About This.
Think Hard About This History Quiz
The history quiz
that ranks you
against the world.
Every history question you answer pushes your Glicko-2 rating up or down on a real leaderboard of players — friends, family, and some of the most serious history obsessives in the world. Three clues per question, hardest first. Climb past the player above you.
Or jump straight to Today’s Daily Challenge·Challenge a Friend·Study Mode
Free to play. Standard Google sign-in (no Gmail or other scopes).
See it before you sign in
Read a real question. All three clues.
Sample 1 of 5
Elementary· american revolutionClue 1 of 3 — hardest
This influential pamphleteer published 'Common Sense' in 1776, which convinced many colonists to support independence from Britain.
Preview only — no rating impact, no account needed. The real game tracks your Glicko-2 rating, lets you challenge friends 1v1, and reads each clue aloud in Brent’s voice.
Three modes
Three ways to play the quiz.
Every mode pulls from the same bank of thousands of history questions, but what you see depends on which mode you pick.
Mode 01
Prepare for Competition
U.S. history, civics, key world events. Calibrated for serious competitors.
See sample questions →Mode 02
Broad History Challenge
All eras, all regions. Ancient Egypt to the Cold War — surprise yourself.
See sample questions →Mode 03
Topic Specific
Pick one topic. Drill until you own it. Twenty topics from Ancient Rome to the Cold War.
See sample questions →Top of the leaderboard
The minds you’re climbing past.
These are the players currently leading the leaderboard. Every question you answer shifts your rating relative to theirs.
Head-to-head
Challenge a friend 1v1.
Create a room, share the code or QR, and play the same questions at the same time. First to buzz claims the answer. Rated matches move both ratings — same Glicko-2 math chess.com uses for player-vs-player games.
3+ player rooms are unrated — in-person trivia night in your pocket.
Start a challenge →Live in the room
- · Brent’s voice reads each clue
- · 15-second answer clock the moment you buzz
- · Clue blurs for everyone except the buzzer
- · Wrong on clue 1? You’re locked out on clue 2
- · Rematch one-tap when the match ends
By the numbers
How the history quiz works.
Glicko-2
rating system
The same math chess.com uses. Your rating reflects what you actually know — and how you compare to other players climbing alongside you.
3
clues per question
Hardest first. Buzz in early to gain more rating against tougher opponents.
∞
questions
A curated core, expanding nightly. The leaderboard of opponents grows with you.
Why THAT?
THAT stands for
Think Hard About This.
Each history quiz question hands you three clues. The first one’s designed to make you stare at the ceiling and dig. The second nudges. The third gives it away. Buzz in early when it’s hard — climb the leaderboard fastest, past the players above you.