BRANE™: Prototype is a short free innovative 2D indie puzzle game for Windows and Linux. With mind-bending particle mechanics and 16 challenging but fair levels, BRANE™ is guaranteed to at least temporarily make you forget that you will die.

"I love BRANE™ !" 

~My girlfriend (that exists)

Features:

• 16 levels 
• 2 kinds of particles
• Will not teach you anything about real life physics
• No pixelart
• Retro-stylized graphics (but actually fake because no pixelart)
• Two modes of manipulating objects: pushing and pulling (one more then your mom has)
• Interesting gameplay with fun gimmicks
• Erm, has an options menu I guess
• Linux support (I know its literally in the first sentence but maybe you forgot by now)
• Look, its a fine game. I did my best.
• I refuse to add "music" to the list of features