Copy Editor: A RegEx Puzzle

Copy Editor: A RegEx Puzzle

Christopher Jarvis · October 14, 2021 · Simulation, Puzzle, Programming, Experimental, Education

Buy Copy Editor: A RegEx Puzzle from Steam at $6.99 — the cheapest of 1 store we compare.

PC
Mixed54% · 591playing now
Best price
$6.99
lowest tracked $3.49
Steam Buy at Steam

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Where to buy Copy Editor: A RegEx Puzzle — official stores

Steam
Steam
Standard Edition · Steam
$6.99
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Copy Editor: A RegEx Puzzle price by region

Copy Editor: A RegEx Puzzle costs $4.69 in Georgia (USD), £5.19 in the United Kingdom, €5.69 in Europe (EUR), $6.99 in the United States, CA$7.99 in Canada, NZ$8.89 in New Zealand, A$9.95 in Australia, R$23.50 in Brazil and zł25.49 in Poland right now.

Cheapest Copy Editor: A RegEx Puzzle offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
Georgia (USD) $4.69 $4.69 — 1
United Kingdom £5.19 £5.19 — 1
Europe (EUR) €5.69 €5.69 — 1
United Statesyour region $6.99 $6.99 — 1
Canada CA$7.99 CA$7.99 — 1
New Zealand NZ$8.89 NZ$8.89 — 1
Australia A$9.95 A$9.95 — 1
Brazil R$23.50 R$23.50 — 1
Poland zł25.49 zł25.49 — 1

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About Copy Editor: A RegEx Puzzle

Copy Editor is an intricate puzzle game that teaches you Regular Expressions (RegEx), commonly used in computer science and language theory. Build complex rules that process and revise famous texts for your wacky and demanding publishers!

Using "find and replace" text processing commands, your goal is to align your input with the objective. Like its spiritual predecessor, The Devil's Calculator, no familiarity with the concept is needed. The basics are learned through gentle tutorials, with the focus always on tactics and lateral thinking. While you will no doubt learn valuable RegEx skills, the fun of Copy Editor lies in its sophisticated and rewarding logic puzzles. You must navigate playful obstructions such as a limited number of rules, certain keyboard keys not working for particular levels, and an embellishment of RegEx that extends to Natural Language Processing allowing you to discriminate on criteria like sentiment analysis, stems and parts of speech.

Optimization is a big part of Copy Editor, and you can see how well you stack up to others with detailed breakdowns of your performance. In this way it is similar to RegEx Golf but far more elaborate and nuanced, since text replacement is of equal importance. Confident in your skills? A fully formed level editor will allow you to pose your own challenges to the community.

Whether you are new to using Regular Expressions or want to test your proficiency, Copy Editor promises a fun and challenging puzzle experience.

Copy Editor: A RegEx Puzzle — game info

Platforms
Windows, macOS, Linux / SteamOS
Player modes
Single-player, Multiplayer
PC Game Pass
Not included
More games like this:Mac gamesLinux games

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Not recommended May 30, 2024
Cute idea, but does an exceptionally poor job of demonstrating the principles it's trying to teach and frequently leaves out tools that'd make things substantially easier in the name of faux replayability, resulting in a game best played while ignoring its unhelpful "helpful tips" and just looking at a regex command list on a 2nd monitor. Pity!
4 found this helpful
Not recommended Oct 20, 2025
Sadly Im also agreeing with bad reviews here. Great potential. Fails to deliver the lesson before it gives you puzzle. Every regex rule should have one lesson and then it can also dive into some tricks to ease the work, but it is not doing much. The star system is badly implemented, it demotivates. while, similar to Zachtronics, its giving a graph, which would be on its own enough to hint that perhaps robust solution could be polished. Im so so sad this didnt work as I imagined it would.
2 found this helpful
Not recommended Jun 18, 2026
Recommendation: Not Recommended I bought "Copy Editor" hoping to get better at practical, real-world Regex, but I have ended up incredibly frustrated by the game's artificial throttling. Instead of letting you solve text challenges using standard, elegant, and efficient Regex patterns, the game constantly locks basic syntax elements (like the * or ? quantifiers, or $1 backreferences in the replace field). While the developer likely intended this to create iterative "puzzles," the actual result is that it forces more knowledgeable developers to write four or five fragile, brute-force rules to do a job that a single, standard Regex rule would solve instantly. It doesn't teach you how to write good, efficient Regex—it teaches you how to write clumsy workarounds to satisfy an artificial game engine. If you want a puzzle game that very slowly iterates over logical puzzles using Regex characters as a skin, you might enjoy this. But if you are actually trying to learn practical Regex to use in your day-to-day work, this game will only slow you down, frustrate you and teach you bad habits.
1 found this helpful
Not recommended Jan 4, 2026
The game instruction does not exist at all
Recommended Dec 22, 2024
A nice way or learning REGEX
Not recommended Jan 28, 2023
Explicitly forbids you from using certain constructs until the game teaches them to you at a later time. Basically, you are forced to create a worse solution, instead of the just handing you the tools to create the best possible one.

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