Colliderix flash game

Arguably the most "dangerous" part of TYWKIWDBI is the link in the right sidebar that takes you to the "flash games" category.  If the links haven't undergone linkrot, there should be 28 posts there that will take you to a wide variety of potentially very addictive games - many of them physics-based, logic-based, or math-based.

Colliderix is the newest addition.  The game presents you with green and red objects which will disappear when they come into contact with another object of the same color.  You generate movement by clicking on the wooden objects, which then disappear. 

The game is challenging, and frequently frustrating because success often depends on timing rather than strategy per se.   Fortunately there are video "tutorial" walkthroughs that will help you through the rough patches.

Here's the link.  Don't start this game late in the evening.