Hellish platformer The End is Nigh from Super Meat Boy and The Binding of Isaac developer Edmund McMillen has sold over 100,000 copies.
Speaking to PCGamesInsider.biz, the indie game maker said the project had hit that milestone a few months ago, but said that he felt the title could have sold better had he done more press for the project.
The game launched for PC back in July 2017, before coming to Nintendo's Switch in December. The title was a collaboration between McMillen and fellow indie developer Tyler Glaiel.
"We passed 100,000 units sold a few months back," McMillen said.
"I'm definitely happy about how it has sold and made back what we invested time wise and budget in the first day, so it would be shitty to complain. But I kind of wish I had the fortitude to have hyped it more and done more press overall for it because I think it could have sold a lot more if I had."
McMillen also said that despite being incredibly proud of The End is Nigh, he regrets how he made it.
"Making the game was good, but obsessive," he told PCGamesInsider.biz.
"I neglected every other aspect of my life to complete it as fast as we did, and I regret that aspect of development. It was also one of the darkest times of my life and at launch, I hated talking about it... but I also think its one of my biggest achievements and I love what we did a tonne... so its bittersweet I guess.
"I love the game, hate what it's about when it comes to my personal life and the game's allegorical story."
McMillen recently announced that he was making a card game based on The Binding of Isaac called Four Souls. That title is currently on Kickstarter and smashed its $50,000 goal in just 90 minutes.