If you want some free AWESOME games,
http://www.asahi-net.or.jp/~cs8k-cyu/index_e.htmlthis website makes free, downloadable shooters that will easily surpass most console games' replay value. There are many games to get, but if you're too lazy to check it out, ive made a review right here
rRootage: This is a top-scrolling shooter that focuses more on dodging REDICULOUSLY INSANE barrages created by a randommly generated boss. There are many modes, each with a new feature and challenge.
NoizS2A: Another top-scrolling shooter (it even uses the same ship as rRootage), this one is about dodging crazy barrages made by numerous enemies and collecting their remains for points.
Tumiki Fighters: A Side-scrolling shooter where you play as a toy plane against a TON of other toys. If you can catch an enemy's ship before it reaches the bottom of the screen, it becomes fused to you and you can use it's weapon along with your machine gun. Once you are hit, all extra weapons are destroyed, but you can start all over again (I once had a plane that took up half of the screen).
Torus Trooper: The newest and my new favorite, this is the fastest paced shooter you'll ever play (especially on extreme mode) All it is is traveling through a tube shooting enemies, but it is SOOOOO fast, and the effects are amazing.
In conclusion, GO TO THIS REDICULOUSLY AWESOME WEBSITE ahem yes, it is definetly worth your while, especially since each game is like 6-9 megs and the effects and music are amazing
edit: I forgot to mention that the website freely distributes the programs it uses to make the barrages, random numbers, and anything else