SAN FRANCISCO--(BUSINESS WIRE)-- #Clash--Nifty Games Inc., a developer and publisher focused on quick-session, head-to-head sports games for mobile devices, has secured more than $12 million in Series A financing, with $15 million raised to date. The company has also announced NFL Clash, a mobile-first football game that will launch later this year, revealing the company’s licenses with the National Football League (NFL) and National Football League Players Association (NFLPA). The round was led by seed.