Looking to pick up a shiny new copy of NBA2K10 or Undead Knights for your PSP Go? Well, you're out of luck. Joystiq is reporting that several high profile developers for the PSP are still not publishing digital copies of their games. 2K Games, Disney, Temco, and LucasArts are all still producing PSP games in the UMD format only.

Sony has left it up to their third-party publishers to decide when, and if, they'll publish their titles on PSN for direct download. A lot of companies are still opting to use the older UMD format, which is a serious threat to the solid state Go. Many commentators feel that the Go's lack of an optical drive was ill conceived at best. Sony has no plans to force developers to simultaneously release their titles on PSN.

Sony has reported brisk sales of the PSP Go. They claim that it at least matches the figures achieved by the PSP-3000 last year over the same period. Reviewers have harshly criticized the console for its price and method of content delivery.

At $250, the Go is on par with the competing iPod Touch but boasts far fewer features. With the release of the Nintendo DSi earlier this year, the cost of owning a portable system has been steadily increasing, making them comparable in price to TV top consoles. With the problems the system is facing and the lingering recession, it will be difficult for Sony to convince people to place it's portable under the tree this Christmas.

Source: Joystiq