The Hamiltonian Circuit

Name: The Hamiltonian Circuit
Rating: 3.8 (33 reviews)
Author: Good Thinking Games

By: Good Thinking Games

A challenging puzzle game

Features & Capabilities

Looking for a challenge that will build your abstract thinking skills? Try The Hamiltonian Circuit, a fun, relaxing puzzle game that's easy to learn and tough to master.

Find a path that visits every square in the grid, avoiding walls and never crossing itself, to create one continuous circuit.

To get the hang of things, start with one of the simple 4x4 grids. Plot your moves carefully. Try to think ahead; not just by one square, but by four or five. If you think you've made a mistake, trace back over your line. It will disappear.

If you really get stuck, press Hints. Any mistakes will turn red, then disappear. But if you're on the right path, we'll add a line.

There's only one solution for every puzzle. When you find it, you'll know.

Puzzles start with 4x4 grids and go all the way to 20x20. The bigger puzzles are very challenging and can take hours to solve. If you have to quit in the middle of one, don't worry: your progress is automatically saved.

Many find working on these circuits meditative; others reach for the ibuprofen. But no matter which camp you find yourself in, know you're exercising your abstract thinking skills and challenging your brain in ways that actually matter.

Inspired by a puzzle created by Irish mathematician William Rowan Hamilton in 1856, these circuits start off easy and get hard. Really hard. Good luck!

User Growth & Download Statistics

App

By:

Good Thinking Games

Rating:

3.80

(33)

Version:

3.4.8 Last updated: 2026-06-03

Version code:

886479279

Creation date:

2021-01-22

Compatible devices:

Size:

64.92MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-12

Compare stats and ranking:

Ranking

# 248,250 ▼ 1,040

For Developers

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Contact the developer

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Developed by:

Good Thinking Games

Apple Apps Store

https://apps.apple.com/us/app/the-hamiltonian-circuit/id1484345208

Website:

https://www.goodthinkinggames.com/

User Reviews

The Hamiltonian Circuit offers a strong core puzzle experience with high-quality, challenging puzzles that many find addictive and satisfying, paired with appealing visuals. However, reviewers frequently cite usability and clarity gaps (no undo, unclear scoring) and reliability issues (updates disrupting progress, purchase crashes). Some express concerns about value for money and platform limitations (iPhone vs iPad). Overall, it's a compelling puzzle game with room to improve user experience, stability, and accessibility.

Pros

Puzzles are great, challenging, and well designed.
Addictive and replayable; players quickly get hooked and keep solving more.
Visually satisfying with smooth animation and a clean, minimal UI.

Cons

Missing undo/redo and other quality-of-life features that would ease solving; users repeatedly request an undo option.
Scoring and progress feedback are unclear (end-of-puzzle percentages without clear criteria).
Bugs and reliability issues across updates (progress sometimes marked incomplete after updates; occasional crashes during in-app purchases).
Pricing/value concerns; several reviews call the packs overpriced or feel the content isn’t worth the cost.
Device limitations and platform gaps (some large levels not available on iPhone; zoom/compatibility issues raised).

Recent reviews

Started playing this after seeing the developer n Jeopardy. The puzzles is great, and reminiscent of other circuit completion puzzles like Nikoli Slitherlink, and Kaser’s Willa’s Walk. So why four stars? The app itself feels like a minimum-viable product and could use a little more work. In particular, the lack of an undo/redo button is not great. I find myself having to hit reset if I paint myself into a corner and would prefer to tap undo a few times. Also when you start the app up, you have to do some menu diving to get to your last puzzle. This shouldn’t require more than a single tap.