UNO on the PSP is the latest game used as an exploit to get around the PS Vita’s PSP mode security.
Via a sneakily modified save game, users could fire up UNO on the Vita and then find the normally fairly robust protection circumvented. Sony pulled UNO pretty quickly, but that hasn’t stopped the game selling more than everything else last month.
Indeed, UNO sold more than Grand Theft Auto: Vice City Stories, NBA 2K13 PSP, Monster Hunter Freedom Unite and Star Wars: Battlefront II last month in the US, with the US Blog making no mention (understandably and predictably) as to why.
The exploit still works, with presumably a firmware update on the way to lock out the workarounds. Of course, you can’t buy UNO any more as the game is no longer on the PSN Store, but it does go to show just how many people are keen to at least try the exploit.
The exploit doesn’t affect the Vita side of things, it’s just the Vita’s PSP mode.
Other games affected include MotorStorm: Arctic Edge, Mad Blocker Alpha and Everybody’s Tennis, with the games all being removed from the Store until the security holes can be patched up.