Taking a different approach from Taito's own Space Invaders Extreme revival, Xona Games's Decimation X updates the 31-year-old shooter by increasing the pace and adding four-player support (compete for high scores), custom soundtracks, and s showed of spars whenever you hit anything with your canon's rapid-fire stream of shots.

Decimation X is available right now through Xbox Live Indie Games for only 80 points, and you can download a free demo, too. Xona Games plans to release a free update soon that should add online leaderboards, so you can compare your 1+ million score against others'.

The developer is also working on another intense-looking four-player shoot'em up called ZF Duality, which I've embedded a Boss Rush video for below:

[Via Technabob]