Nordic online gambling operator Betsson says strong growth in its casino vertical helped offset poor sports betting results in December.

Figures released Thursday show Betsson’s revenue rose 7% to SEK 1.12b (US $125.6m) in the three months ending December 31, while operating income surged 52% to SEK 256m as margins improved seven points to 23.7%.

Betsson’s core casino operations drove the numbers upward, as casino revenue rose one-fifth to SEK 823.7m. Mobile casino revenue was up 83%, while overall mobile revenue rose 46% to SEK 546.8m, now representing 49% of group revenue.

Betsson continues to humble-brag that its mobile casino is now the “world’s largest.” Betsson’s casino boasts 1,758 games, of which 1,246 are available via mobile channels thanks to the rollout of Betsson’s new OBG front-end technology platform.