DHTML Arkanoid!
Platform: Javascript
It is amazing what Scott Schiller of Calgary can do with a little JavaScript and DHTML.
His personal site, Schillmania!, is an impressive mix of web design, funky scripting, detailed interfaces, mixed-media presentations and utilities all centering around client-side technology. But what I'm most excited about is Scott's implementation of the arcade game: Arkanoid. Not only has he re-created it with all original levels, he has also implemented an awesome level editor with which you can create your own levels and save them for others to play.
The interface is slick and simple, and yet looks more like an application program running than code in a browser window. His excellent use of sound enhances the experience without being overbearing. So, do check out his work, whether you're into games, design, or client-side programming. Click.
The best game ever
I might have to agree with barney4Life, this is freaking awesome!
I'd like to see a feature in the level editor where you can choose which blocks to hide power-ups in.
WOW i just figured out how to find a level you made.
1 make a level after saved see next spoiler
2 memorize level number
3 go to any level
4 copy URL
5 paste URL in a new web browser
6 replace the level number (not the word level) with your level number
http://www.schillmania.com/arkanoid/arkanoid.html#level13161
name: white = black
Update