Epsilon
As Albert Einstein once said, "The most incomprehensible thing about our universe is that it can be comprehended." I'm sure books have achieved the act of making the average person wonder about the stars, moons, suns, birds, and bees. Heck, our ability to comprehend the universe is something that differentiates us humans from gnats. That is probably one thing that builds sentience.
Anyway, Epsilon is a puzzle game by Dissolute Productions. The plot is rather insubstantial, and difficult to explain, so I'll just sum it up. Basically, you are a participant in the testing of some particle-accelerator...type...thing. This contraption can bend the fundamental laws of physics inside it, creating short-distance teleportation (through wormholes), gravity mutations, time alterations...et cetera.
You can freeze time within the contraption with the Spacebar, rewind time with X, and move your 2 portable wormholes around the map with your mouse. To progress, you must get a metallic ball to collect all of the tokens littered around the map to unlock a portal to the next level. To further help you are gravity-altering tokens, which alter the direction of gravity from boring, old "down" to up, left, or right, and tokens which simply turn gravity on or off. Oh, and there are 2 [relatively useless] "ghost" options in the configurations menu which I never got around to getting my head around, but anyway.
While Epsilon's mechanics are simple, these very mechanics have been polished into a level of awesomeness rivaling the Hope Diamond. Epsilon also mixes it up, sometimes shutting off your one-size-fits-all-fixer-upper time rewinding power, giving out time trial levels, or doing both at once. I've always hated time trials because of their finicky-ness and time-intensive-ness. Epsilon understands that, and while it doesn't (and probably can't) fix the former, it fixes the latter, because most of the time trial levels give you about 5 seconds (and yet, the time trial levels don't suffer the frustration-inducing ness of most [ridiculously] short time trials).
Speaking of finicky-ness, Epsilon does have a very mild case of it. Sometimes the metal ball can get stuck between two wormholes trying to connect two narrow passageways together, and sometimes things get jam-like when the gravity is off, but it doesn't stop Epsilon's fun-fun choo-choo train from racing along. All of Epsilon's [very few] blemishes aren't even really relevant, since Epsilon is still (at least until Epsilon 2 comes out, possibly) my favorite puzzle game. Epsilon is, simply, 35 levels of psychics-bending awesomeness that still wastes my time to this date.
