Just watch out for the sawblade on Level 4. It’s a killer. Have you forked the tower? Share your best mod or death screenshot in the comments below.
BTTS is the perfect codebase for a junior developer. It is not a sprawling React monstrosity with 400 dependencies. It is a few hundred lines of tightly-written JavaScript. Want to learn how requestAnimationFrame works? Want to understand collision detection (AABB collision, specifically)? Want to see how to manage game state without a framework? Clone the repo. The answers are all there, visualized in real-time.
The original game has a "bug" where if you jump at a specific frame rate, you clip through a corner. Ethan didn't fix it for months. Why? Because it felt like a "technique." In open source, a quirky feature is better than a perfect, non-existent patch. big tower tiny square github
The most successful forks of BTTS aren't the ones with the best graphics; they are the ones with the clearest README.md . The repo that includes a diagram of the collision response vector is the repo that gets the stars.
GitHub Repo Reference: github.com/ethanmick/big-tower-tiny-square Just watch out for the sawblade on Level 4
It is a reminder that at the bottom of every towering monolith of code we build—every microservice, every database migration, every CI pipeline—there is just a tiny square trying to get from point A to point B without crashing.
Go to the "Issues" tab on the main repo. Look for the closed ticket titled "Square feels floaty" . It has 87 replies. It discusses jump impulse, delta time, and sub-pixel rendering. This is a metaphor for every agile sprint meeting you will ever attend. Share your best mod or death screenshot in
If you have spent even a cursory amount of time on programming social media—specifically the chaotic corners of Twitter (X) or the front page of Hacker News—you have likely seen it. A single, impossibly tall tower. A minuscule, pixel-perfect square. And a challenge so deceptively simple that it has broken the spirits of veteran developers and delighted beginners in equal measure.