Sony has admitted that it is having trouble getting publishers to make games for its PS Vita handheld.

“We're having a more difficult time than we had anticipated in terms of getting support from third-party publishers, but that's our job," said Sony Computer Entertainment worldwide studio president Shuhei Yoshida.

“We will continue to talk to development communities and publishing partners and tell them why Vita can provide a great experience for the IPs they have, and I hope the Assassin’s Creed game [Liberation] will prove that.”

The Vita has largely struggled since its launch eight months ago, its poor performance a factor in Sony’s decision to cut its portable sales forecast for the fiscal year by a quarter.

The Vita is commonly criticised for its relative lack of compelling games, so if publishers’ attitudes to the handheld hold fast, its only chance to change its fortunes might be a price cut.