From that standpoint, Yacht Club has done an impressive job of living off Shovel Knight, which is now available on most major platforms and has managed to sell a million and a half units.
Also, a few notes from the "1 month later" blog post where they announced 180,000 copies sold: http://yachtclubgames.com/2014/08/sales-one-month/
After the Kickstarter project ended, we all discussed our sales goals. The number that most of us settled upon was….when all was said and done, 150,000 copies sold in total. That was our high point!
It’s been a crazy ride! We’re not done yet though. We’re going to keep working our hardest to keep this game loved, played, and selling like hotcakes. Our new goal is the quest to 1 million sold, to truly solidify Shovel Knight as a modern platinum classic!