Core Gameplay

Regular Expressions - an essential skill for programmers - become your puzzle-solving tool.

Starting with basic number matching, each level introduces new Regex rules with gradually increasing complexity.

30+ Meticulously Designed Levels covering fundamental Regex concepts through:

Accessible Design: 95% of the levels require no coding experience to pass perfectly. Players who can program can use their abilities to reduce the difficulty of the red level.

Brain Teasers: Regex-themed mini-games between chapters to consolidate skills. The subtle pace of the challenge helps to alleviate the frustration of a failed challenge.

First Challenge Example

Real-world Scenario: Identify email addresses in text:

Regex Tips:

/d matches digits

+ indicates "one or more" of preceding element

~ o(*￣▽￣*)o That's right! Solution:

"Congratulations! You've cleared the toughest level in Chapter 2!"

(Quick Flip Book)

Web Crawling Simulation

Chapter 4 Challenge: Extract HTML links from tags:

<a id="policy_DeleteAccount" href="/WizenedDream/DeleteAccount.html"></a>

So smart! Advanced Solution:

/<a[^>]*?href/s*=/s*[/"/']?(?<URL>[^/"/']+)[/"/']?[^>]*?>

( ˘•ω•˘ ) What? Not yet?

Keep playing! The early levels will systematically build your skills to conquer advanced challenges.

(Players who can solve this problem should have studied regular expressions. The first 3 chapters are mainly for beginners, so please skip the level on your own according to your ability.)

Difficulty System

• Green 

  • Time: 1-2 min

  • Goal: Learn individual Regex symbols

• Blue 

  • Time: 3-5 min

  • Goal: Combine 3 symbols or fewer

• Purple 

  • Time: 5-20 min

  • Goal: Solve real-world problems

• Red 

  • Time: 30+ min

  • Goal: Tackle complex pattern analysis

Chapters 1-3: Green/Blue levels

Chapter 4+: Purple/Red challenges

AI assistance recommended for stuck moments.

~~Red levels: Where "simple" means 2 hours of glorious debugging~~