Browser · multiplayer
Quizium
Challenge your friends, prove you're right. Nine games across maps, words and pictures — play solo, race the clock, or open a lobby and share the code.
What's in it
Three categories, nine games
Every game runs solo, against the clock, or in a lobby with friends. The same round loop underneath, three very different surfaces on top.
Map Games
Guess the Countries, Capitals and Regions, played on real projected geography rather than a picture of a map. Three games across 28 maps, from Europe to the whole world.
Word Games
Alphabet Soup, Emoji Code and Same or Opposite — find words in a bowl of letters, crack what the emoji are spelling out, or sort the same from the opposite.
Picture Games
Pixelated, Zoomed In and Odd One Out. Name what you're looking at before the picture gives it away, or spot the one that doesn't belong. Three games, 194 pictures.
Solo, Time Trial or multiplayer
Play on your own, race the clock for a best time, or open a lobby and let everyone answer from their own screen.
Player Stats
Best solo score, fastest Time Trial and every trophy won in multiplayer — kept per category, so each one keeps its own record.
Just share the code
No install, no sign-up, nothing to download. A short lobby code is the whole invitation.
Under the hood
Built to hold a room together
Each lobby is its own Durable Object on Cloudflare's edge — one authoritative place holding the game state, with every player connected to it over a WebSocket. That's what keeps twelve people's screens agreeing on whose turn it is.
Answers in progress are never broadcast, so nobody can read the host's pending pick out of the network traffic before it's locked in.
| Front end | React 19, Vite, TypeScript |
|---|---|
| Back end | Cloudflare Workers with Durable Objects and SQLite storage |
| Geography | TopoJSON with d3-geo projections and ISO country data |
| Joining | A short lobby code — no login, no install |