I was finally able to close the deal with SpilGames. I sent the initial E-mail to them in early March, and just got paid today. They're a bit disorganized and my game initially failed going through their QA due to internal disagreements as to what the Ads API should look like inside the game. That said, they did pay a hefty sum of money for my game, so they're definitely legit. Their staff is friendly via e-mail and also on Skype for quick response.
3.5/5, would sell again.