Hyperbolic is a spaceflight app like none you've seen before, using the touch screen and real orbital mechanics to let you fly to the Moon, Mars, Jupiter, and back.  It's up to you whether you want to try flying realistic trajectories to other planets, or just blaze your way across the solar system. 

Hyperbolic on the App Store

Glass Maze 3D HD has been adapted for the iPad.  Now allows maze sizes up to 8x8x8, for all of you who think 6x6x6 has gotten too easy.

Glass Maze 3D HD on the App Store

Glass Maze 3D is a novel concept: a true 3D maze for the iPhone with an extremely intuitive, touch-based interface.  Swipe the maze to rotate it in three dimensions, and tilt it to roll the ball to the exit.
Glass Maze 3D on the App Store

Glass Maze is an accelerometer-based maze puzzle using OpenGL graphics and a random maze generator.
Glass Maze on the App Store