Super Mind Dungeon
The idea is naturally quite simple: avoid the things that would kill you, try to make it to the goal. Click the mouse to fire off your psi-power and bounce off in one of four diagonal directions determined by the location of the cursor relative to the main character. You don't have precise control over speed or movement, but you'll soon realize that harnessing your motion is the core concept that Super Mind Dungeon is built around.
When you use your psi-power, you are unable to use it again until bumping into a non-metallic surface. This leaves you vulnerable to pesky gravity and momentum, so moving through each level requires some forethought. You need to bounce off just the right part of the wall to make it through some corridors, and oftentimes you'll stay airborne as you psi-fling, recharge, and fling again several times in a row, all to avoid a pit of spikes below. Exhilarating!
Super Mind Dungeon deserves a tiny slap on the wrist for its unpredictable difficulty. One minute you're coasting through levels, maybe dying once or twice here and there, but nothing too extreme. The next minute you can't seem to stay alive for more than three seconds as you respawn dozens of times just because you can't make it past one bed of spikes. Eventually you make it (if you don't ragequit), and after that, it's back to simpler levels. You never know what's next, and throughout the game's 30 levels, you'll get stuck at really odd places, unable to continue because you have to complete each stage in order. Smoothing the difficulty and adding a group level unlock system would make it a much more player friendly experience.
All in all, Super Mind Dungeon wins huge points for its originality, loses a few points for its varied difficulty, and gets a few retro brownie points for its pixel-loving presentation and old-school sound sensibilities. A great way to spend a few minutes of your afternoon.