Japanese purchasers of the 360's Tales of Vesperia are angry, angry because they believe they have been used as guinea pigs ahead of the arrival of the version of the - due soon.

A petition aimed squarely at publisher attacks the quality of the role-playing game, players angry that the PlayStation version will boast a number of improvements over the version already released.

"The games should not be dispersed across multiple platforms, they should be consolidated onto one platform [i.e. Xbox 360]. The games should be complete and properly made," reads the petition.

"From now on, the porting of titles like Tales of Symphonia and Tales of Vesperia should be abolished. An official apology should be made to users forthe abnormal number of additions made to Vesperia only a year after its Xbox 360 release."

So far over 500 people, of a desired 1,000, have signed the petition.

By Luke Guttridge