Geometry Wars: Retro Evolved has made a welcome, budget-priced appearance on Valve's Steam content delivery network - but the big news is that it's now compatible with Windows XP.
The two-stick shooter that drove thousands to the launch of Xbox Live Arcade in November 2005 is offered at an introductory price of just USD 2.50 - which is around half that total in pounds at the current (hilarious) exchange rate.
However, you'll have to get in there quick to take advantage of the mega-low price, as it will ascend to USD 3.95 on Friday, 22nd June. That's the price that the Windows Vista version, launched in January, currently sells for on MSN.
Sadly neither is compatible with "Games for Windows - LIVE", which means you can't use them to grab Achievement points on the PC. That said, if you've yet to play Geometry Wars then you probably don't own an Xbox 360, and if you probably don't own an Xbox 360, you double-probably don't give a flying triangle about gamerpoints.
Steam users who fancy a pop at Geometry Wars can do so using that Internet or through the Steam client's games page.
And if you still have no idea what all the fuss is about, this is what all the fuss is about.