It’s been seven months since Skillz, a startup aimed at mobilizing mobile games, announced its seed round. Back then, it was under the stealth name Lookout Gaming. Today, the Boston Business Journal reports that the company has raised $5.5 million in Series A funding, led by Atlas Venture, who also led the seed round.

Skillz was founded by Andrew Paradise, former CEO of AisleBuyer, which Intuit bought in 2012 for somewhere in the $80-100 million range.

Skillz emerged from stealth in May, offering gamers a platform to let users compete in cash tournaments against one another. The product has been downloaded 1 million times since then, reports BBJ. That’s a pretty impressive proof point, coming so soon after launch. It’s no wonder Atlas was eager to provide additional funding.

I’ve reached out to Skillz to hear more about what they plan to do with the money, and will update when I get word.

UPDATE, from Paradise:

“We raised our seed round back in November to finish building the Skillz platform and bring it live with our first 10 studio partners. Since launching in April, we’ve seen gamers enthusiastically embrace Skillz tournaments, which has translated into fantastic developer interest in our product. We raised our series A now, because it’s time to scale the business: supporting the gamers who enter our tournaments every day as well as the rapidly growing number of developers integrating cash tournaments into their existing and upcoming games.”