(Reuters) -French video game producer Ubisoft on Thursday confirmed its guidance for the current financial year, as the company expressed confidence in its line-up after it beat its net booking estimate for the second quarter. "Activity was mostly driven by the performance of our back-catalog" co-founder and chief executive Yves Guillemot said in a statement, with added sales momentum from The Crew Motorfest and pre-shipments of Assassin's Creed Mirage. Ubisoft, which has been dogged by game cancellations and delays, reiterated its forecast of a full-year non-IFRS operating income around 400 million euros, without releasing the other large game it had initially planned to launch during the last quarter of the current fiscal year.