Another day, another acquisition by Yahoo. Yahoo said on Thursday morning it’s acquired PlayerScale, a California-based startup that makes software infrastructure for cross-platform gaming. Financial details haven’t been disclosed. PlayerScale, which was self-funded and cash-flow positive as of this past January, was founded in 2009. According to a VentureBeat article also from January, the company had a staff of 14. Yahoo tells us that 7 people from PlayerScale are joining Yahoo as part of the transaction. The four-year-old PlayerScale says its platform now has more than 150 million players, which marks significant growth from just this past January when our own Anthony Ha reported the platform had crossed the 100 million user line. For now this does not look like a straight acqui-hire situation, as both Yahoo and PlayerScale say the gaming platform will remain active post-acquisition and continue to be developed.