Indie developer thechineseroom released a Mac version of its IGF award-winning first-person adventure game Dear Esther this week, and announced that it has sold more than 100,000 units since its initial launch.

"This is a huge landmark for us and I'm still completely taken aback by how well it's done," notes Dear Esther art designer Robert Briscoe.

"I have to admit I was a little unsure as to what to expect from sales of Dear Esther once we went to retail, we all were -- there was no real benchmark to go by at the time, so I'm extremely pleased to see so many people enjoying the game, and most importantly, proving that gamers are open and eager to new ideas and experiences outside of the boundaries of 'traditional' gameplay."

Dear Esther is regularly priced at $9.99, but is available for $4.99 via Steam until May 17th at 4 PM PST.