Apple on Thursday updated its App of the Week promotion with the game Zip-Zap. For the next 7 days, you can download the popular title for free on both iPhone and iPad—a solid savings of $2.

From the App Store Editors’ Notes:

Elegant but packed with personality, Zip Zap kept us happily tinkering for hours. To solve its deceptively tricky puzzles, you’ll set Rube Goldberg-style hinges and levers into motion with strategically timed taps. The bite-sized levels and one-finger controls make it perfect for quick escapes.

And here’s a clip of the game in action:

Zip-Zap is available in the App Store for free.