Sales reached 70.7 million euros (nearly $84 million) in the third quarter compared to 50 million the previous year, but year-on-year the company lost 800,000 euros.
Earnings before interest, tax, depreciation and amortisation were 6.1 million euros compared to 8.1 million euros the previous year.
Rovio said it invested 22 million euros in top performing games, hoping this would boost its profits in future.
'Angry Birds' maker Rovio plans to list its shares
"We expect the payback time for these investments to be 8 to 10 months," Rovio CEO Kati Levoranta said in a statement, adding the launch of the new Angry Birds Match game could become one of the company's "best performing".
Rovio has accelerated its diversification in recent years. The release of the "Angry Birds" movie (2016), produced by Sony Entertainment, was a huge success as it grossed $350 million worldwide, and is expected to help bolster Rovio profits in 2017 and 2018.
The company also runs "Angry Birds" theme parks in several countries, including Finland, China and Spain. It oversees the publication of children's books in a dozen languages on the famous birds while boasting an average of 80 million active players per month and 11 million per day.
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