Ready to fill your hard drive to the brim? This weekend we've got several commercially produced games released as freeware. That means you get all the polish and production value of a big studio title without shelling out the cash. You'll have to be patient while they download, and the games aren't as friendly to casual gamers as we'd like, but you can't beat paying nothing for a game that used to carry a retail price tag.

Of all the strange game ideas I've seen, building a platformer around hockey and Randy Savage has to be one of the wackiest. But that's exactly what we have this weekend, along with such unlikely company as a spooky horror-adventure game and a physics sandbox toy.

Frets on Fire is an open source clone of the ever-popular PlayStation 2 music/rhythm game, Guitar Hero. And just like Guitar Hero, Frets on Fire features a handful of songs and allows you to play the guitar sections by pressing just a few keys. Instead of using a separate controller to mimic the guitar, Frets on Fire lets you pick up the keyboard and jam in right front of your desk. Best of all, a built-in editor lets you tab any song, spawning a growing community of music-modders on the web.

Spheres of Chaos is gorgeous in motion, with extremely smooth animation amid literally hundreds of enemies and explosions (and up to 8 simultaneous players!). Far more than just a nostalgic tribute to Asteroids, SoC is a fascinating, unique and memorable classic in its own right.

Although you may have played similar games recently, such as Geometry Wars, Grid Wars, Rainbow Wars, and the like, this next one was very nicely done in Flash and requires no download other than the usual loading within a browser. Engaging from the second it starts, Neon is one of those rare games that just feels great to play.