Challenge Games, developer of the popular online fantasy game Duels and the new fantasy baseball and card collecting game Baseball Boss, announced it has secured $10 million in Series B funding. The round is being led by Globespan Capital Partners with participation from Series A investor Sequoia Capital as well as existing investors.

Duels and Baseball Boss are the first titles developed by Challenge Games. They’re free-to-play online games that combine the collectibility and trading associated with collectible card games (CCGs) and sports cards with the competitive aspects of massively multi-player games (MMORPGs) and the ease of access of community Web 2.0 applications. They are also unique in their asynchronous, short-form design, which allows them to be played in 5-15 minute increments rather than in long marathon sessions.

“Challenge Games is addressing a real need in the market,” said Eugene Yoo, Vice President at Globespan Capital Partners. “Short form, free-to-play, web-based games have the potential to pull new consumers into the category. And the engaging gameplay of their titles appeals to the active casual and hardcore gamer as well.”

“We believe this funding further demonstrates that we are bringing innovation and value to the gaming industry,” said Andrew Busey, founder and CEO of Challenge Online Games. “This funding will help us accelerate the growth of our business through the development of new games, explore partnership opportunities and potentially acquisitions.”

Duels and Baseball Boss are free to play. Gamers can collect items and cards within the game and trade them with other players. They can also sign up for VIP memberships for a small subscription fee, which provides additional benefits such as the ability to buy special items and cards to enhance the gaming experience.

To play Baseball Boss, visit www.baseballboss.com. To play Duels, visit www.duels.com or http://apps.facebook.com/duelsfb. For more information on Challenge Games, visit www.challengegames.com.