Great news for Saitama’s fans revealed at the “One Punch Man Fall Festival”, since One-Punch Man is getting a second season. The staff and the cast that attended the event announced, also, that the series is getting a Smartphone game app next year.

The first season of 12 episodes premiered last October and it was completed in December. Shingo Natsume was the director of the series, while the production was undertaken by Madhouse.

Yuusuke Murata’ s One-Punch Man manga, which is an adaptation of the homonymous web manga by ONE, is running on Shueisha's free Tonari no Young Jump magazine, while Viz Media publishes the original manga series digitally on Weekly Shonen Jump anthology and in printed form. 

Sources: animenewsnetwork.com, onepunchman-anime.net