The Helsinki-based mobile game maker said all our top three games Angry Birds 2, Angry Birds Dream Blast and Angry Birds Friends grew year-on-year.

Rovio said it expects strong top line growth for the year but its adjusted operating profit to decrease year-on-year due to investments in new games development and marketing.

Rovio is seeking growth from diversifying its portfolio, having acquired Turkish Ruby Games in August and by partnering up to create new mobile games for Moomins, cartoon characters originally popular from a series of books and a comic strip.

Rovio Chief Executive Alex Pelletier-Normand said: "We continue our M&A efforts, aiming to build new growth avenues within casual games, grow our audience network, and establish value through synergies across our game portfolio and studios.”

Rovio reported an underlying operating profit of 13.1 million euros for the October-December quarter, up around 75 per cent from a year earlier.