Drifter is a really fun game. It's a puzzle game that lets you slide around collecting stuff. There are also portals, pitfalls, acceleration pads, brake pads, and other features to help mix up the gameplay.
The Level Editor is nice, but you have to figure out the controls yourself. Unfortunately, you can't choose a user-created level in the menu, you have to type its name in. The save system is also a little odd, but its not that hard to understand.
Speed: The game is in TI-Basic, so it's a little slower than in the screenshot. It doesn't really hinder gameplay much though. 9/10
Controls: Basic, but it works well 10/10
Gameplay: Pretty addicting, but only 17 levels (There's a secret one...) 9/10
Originality: First time I've seen something like this 10/10