Cogs HD is an award-winning 3D puzzle game where players build machines from sliding tiles. Unlock new puzzles by building contraptions quickly and efficiently. Try out the first few puzzles for free when you download Cogs HD Lite ( 51 puzzles in the full version )

“It is awesome.” – TouchArcade
"One of the highest quality puzzle games we've seen." – PocketGamer
“The visual design and imagination of the game are stunning, with great attention to detail, and the sound effects are downright enticing.” – Adrenaline Vault
“If a sliding puzzle was a wheel, consider it re-invented!” – TouchGen

“A masterpiece visually, as well with the actual gameplay.” – AppAdvice

Starting with simple puzzles, players are introduced to the widgets that are used to build machines — gears, pipes, balloons, chimes, hammers, wheels, props, and more.

If you finish a puzzle in Inventor Mode, it will be unlocked here. This time, it will take fewer moves to reach a solution, but you only have 30 seconds to find it.

Take your time and plan ahead. Every click counts when you only get ten moves to find a solution.

What’s New

Version 1.5.1

Cogs now looks great on every device, including support for retina displays! Much faster startup. Now tracking achievements with Game Center.

Ratings and Reviews

3.8 out of 5
6.3K Ratings

6.3K Ratings

lar52 ,

Big problem

Great game. Graphics and sounds are very good BUT...only one landscape orientation is supported. In other words, if you turn your device over to use your case "kick stand", the game will be upside-down. Not with all cases but with many including mine. This is a 5 star game that I would buy if fixed. I can't believe the developers allowed this to be released with this limitation!

Sky Jester ,

This Is What the iPad was Designed For.

This brain twister (actually slider) will make the wheels in your brain turn and then blow your mind like the many “Cogs & Steam Pipes” you have to slide into place to complete the some 5o plus puzzles. The graphics are eye candy and the ergonomics pajama comfortable for the fingers. For me, what sealed the deal to buy the full version was the so-called “Lite” gave me exactly what I needed to know what I was about to pay for and was free of clutter and ads that torque the fun out of any trial. I wish they would make it for the iPhone.

Definitely one of the best puzzle games out there and free of glitches. It's based on "The n-puzzle," (invented in 1879 and the basis for the Rubik’s Cube) was big in the 70‘s and commonly known as the "The 15 Puzzle" (and it's little brother "The 8 Puzzle"). It’s a classical problem for modeling algorithms involving heuristics (don’t let that scare you) and consists of sliding squares in a frame to solve the objective which is described before you start, giving you times to beat. The great part is, even after solving the puzzle, you can do it over to best your times making this game a real bang for the buck.

Bottom line... it’s well worth your time!

dogeymon ,


This is one of those games that any games console maker out there would love to package with their game system, assuming the category of games was "casual". That's what this is: a casual and addictive delight. Absolutely gorgeous, polished animation and very addictive puzzle solving. And the levels have a real variety, going from 3d objects to 2D flat surfaces, and keeps it interesting. I will definitely buy the full game!!!


Lazy 8 Studios LLC
46.5 MB

Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© Lazy 8 Studios


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