CEGamers claims to have discovered what could be the developer's next big Facebook game: Bubble Safari. The website found the unreleased data as cross-promotional material for Pioneer Trail that, if players try out the bubble popper, they'll earn items for the former.

CEGamers calls Bubble Safari a "mini game," but mini games aren't exactly Zynga's modus operandi. Even if this was a mini game to exist within one of the developer's bigger games, doubt it would run an entire cross promotion campaign for it.

It makes sense for Zynga to try its hand at a bubble-bashing Facebook game--just look at the competition. EA and PopCap have their own form of bubble blaster in Zuma Blitz, Wooga's Bubble Island is its second most popular game and King.com's raise to fame is thanks to Bubble Witch Saga. Bubble Safari could very well be the next social game from Zynga, though the company has yet to confirm anything. So keep attention.