Desura now offers Chuck's Challenge 3D for Windows, OS X, and Linux, a years-later follow-up to Chip's Challenge. Playable demos are also available, and here's the rundown on all this:

From design genius behind the classic game Chip's Challenge, comes Chuck’s Challenge 3D, a fiendishly addictive puzzler that’s packed with features that will tease the brain and challenge the fingers. It also comes with a level editor that lets you upload and share your levels for everyone to play and rate, all from within the game.

Chuck’s Challenge 3D includes four different game modes:

• PLAY – through 125 levels with your best times published online
• CREATE – your own levels with over 70+ Game Elements & share them with the world
• SEARCH – download levels created by other players
• WEEKLY PUZZLE – play the best user created level of the week

Meet Woop, just your everyday puzzle lovin’ purple alien capable of altering time and space. Woop has summoned all-round puzzle game legend Chuck Sommerville for one purpose - to create a universe of puzzles for him to work his way out of.