New Zealand developer Luxaloffle has launched the alpha of a little indie title called Voxatron. The game itself will cost US$15 when it officially launches, but right now it's available on a pay-what-you-want basis through a cool system called the Humble Bundle.

So far, Luxaloffle has sold 96,109 copies of Voxatron, and that number is rising by the minute. The total payments made currently add up to more than US$427,000 - and this is only a day after the deal went live.

Voxatron is a platform shooter, with interesting, retro-but-not-retro graphics and super retro music. Check out the video below:

Anyone who buys Voxatron through Humble Bundle will receive all the patches and updates for free, and they can divide what they pay - however much it is - between the game developer, the Humble Bundle website, and charities.

Interestingly, the website has some stats that show what people using each operating system - PC, Mac or Linux - were willing to pay. As it turns out, Windows users are cheaper than Mac or Linux users - on average, Windows users spend around $4. Mac users sit in the middle, paying around $5.70, and Linux users are happy to pay an average of $7.30.

If your curiosity is piqued, you can check out the game, pay for it and download it at http://www.humblebundle.com/