Crypto games

Quick, free puzzles that run in your browser — read a crypto chart, or out-think a deadlock. No sign-up, no download.

• Chartle — Daily Crypto Chart Game

  A crypto chart game: guess the coin and the year from a real, unlabelled price chart in five tries. One new chart a day, everyone gets the same one.

• Daily Bug — Spot the Bug in Real Code

  A daily code bug puzzle: one real snippet, exactly one bug, five guesses. Everyone gets the same one each day. Free, no sign-up, in your browser.

• Standup — The Daily Fifteen Minutes

  A daily standup game: five things get said to you, three ways to answer each, one shareable grid. Same standup for everyone that day. Play today's in a minute.

• Hash Runner — Crypto Endless Runner Game

  A crypto endless runner game down the blockchain. Jump the stale blocks, dodge the orphans, collect nonces and seal blocks. Free, runs in your browser.

• The Genesis Block — Live Bitcoin's First Decade

  A bitcoin history game: twelve decisions from the first decade — the pizza, the exchange, the landfill — and five endings. Free, no sign-up.

• Big-O — Name the Complexity of the Code

  A big O complexity quiz: read five real snippets, name the complexity, then see your guess and the answer plotted on the same curve. Free.

• Gate — Build the Circuit That Matches the Truth Table

  A logic gate puzzle game: wire AND, OR, XOR, NAND and NOR into a circuit that matches the truth table. There is no NOT gate — build one. Free.

• Sorting Race — Bet on the Faster Algorithm

  A sorting algorithm visualizer game: two algorithms race on the same array and you bet on the winner. The better big-O is a coin flip. Free.

• Uptime — The On-Call Triage Game

  An on call incident game: triage alerts by impact, deploy age and runbook, and learn which mistake costs more. Free, no sign-up, in your browser.

• Type or Die — A Typing Game for Programmers

  A programmer typing game: type real identifiers and keywords before they reach the bottom. WPM is timed within each word. Free, no sign-up.

• Packet Storm — Be the Firewall

  A firewall game: drop the bad packets and pass the good ones. Blocking everything takes the service down as fast as blocking nothing. Free.

• Tech Debt — Ship Fast, Pay Later

  A tech debt game: ship features fast and watch the debt slow you down, or pay it off and ship less. An incremental game where the loop is the point.

• Legacy Code — Inherit a Codebase Nobody Wants

  A legacy code game: you inherit a codebase nobody wants and every option is a trade you cannot undo. Nine endings. Free, no sign-up, in-browser.

• Vanity Forge — Address Hunt & Hardware Benchmark

  A vanity address benchmark disguised as a game: grind an Ethereum prefix with every core and see your keys per second. Nothing leaves the browser.

• GC — Be the Garbage Collector

  A garbage collector game: mark what is reachable from the roots and sweep the rest. Reachability made visual. Free, no sign-up, in your browser.

• Deadlock — Lock Ordering Puzzle

  A lock ordering puzzle: acquire the locks in an order that makes a cycle impossible. Watch the wait-for graph resolve, or deadlock. Free, no sign-up.

• ECC Billiards — Elliptic Curve Puzzle Game

  Reach the target point on a real elliptic curve using only doubling and addition. A puzzle game that teaches the double-and-add algorithm behind crypto keys.

• Higher or Lower — Crypto Price Game

  A crypto higher or lower game: two coins, one price each, guess which is worth more. Endless run, one wrong answer ends it. Free, no sign-up.