Direct2Drive has slashed 50% off of Lazy 8′s acclaimed puzzle game Cogs, going for only $5 now on IGN’s digital distribution service.

The title has players building machines from sliding tiles, with simple puzzles giving way to more complex, three dimensional ones as you progress through.

The title includes 50 levels and three gameplay modes: Inventor, Time Challenge and Move Challenge. With new unlockable puzzles gained by building contraptions quickly and efficiently.

The typically $10 title is available now for $5, though exactly how long the sale lasts is unclear. From the feature list:

Cogs Download Features

Inventor Mode: 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.

Time Challenge Mode: 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.

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