Playground

Hard concepts, made playable

I think the best way to understand something is to play with it. These are quick, hands-on games that make tricky programming ideas click — no walls of text.

🗺️

Cross-platform

One concept, four dialects

Android vs iOS vs Flutter vs React Native, side by side. Tap any concept to see what it really is.

🧩

Java

Java Interfaces

Build a valid interface by catching only the method declarations — dodge the ones sneaking in a body.

🧵

Kotlin

Coroutine Dispatchers

Main, IO or Default? Route each job to the right thread — pick wrong and the app freezes or crashes.

♻️

Android

Activity & Fragment Lifecycle

Sequence the callbacks from onCreate to onResume, then learn what rotate, home and back really do.

🪆

Coming soon

Recursion

Watch a function call itself and unwind — with a base case that stops the madness.

In the works

📈

Coming soon

Big-O Notation

Race algorithms and feel the difference between O(n) and O(n²) as the input grows.

In the works

Got a concept you always found confusing? Tell me and I might build the next game around it. I'm a freelance mobile & full-stack developer — say hello.