Nintendo has said sorry for not including same-sex relationships in its life-sim game, Tomodachi Life.
A social media campaign highlighted the game's oversight and demanded that the game be updated.
However, an initially unapologetic Nintendo has said that it is too late to change the latest version.
The Japanese company said in a statement, "We apologise for disappointing many people by failing to include same-sex relationships in Tomodachi Life.
"Unfortunately, it is not possible for us to change this game's design, and such a significant development change can't be accomplished with a post-ship patch.
"We pledge that if we create a next instalment in the Tomodachi series, we will strive to design a game-play experience from the ground up that is more inclusive, and better represents all players."
Tomodachi players play as avatars of themselves called Miis and can shop, go on dates and get married, all on a virtual island.
Fan campaign leader Tye Marini said how the inability to marry his real-life partner's Mii caused him to miss out on certain game content only available to married characters.
"My only options are to marry some female Mii, to change the gender of either my Mii or my fiance's Mii or to completely avoid marriage altogether," he said.
Nintendo said how it "never intended to make any form of social commentary" with the game, but the omission of gay characters will no doubt smack of naivety to many gamers, especially considering the full range of relationships available on titles such as The Sims, Skyrim and Dragon Age: Origins.
This lack of awareness is characteristic of a company that has navigated a decidedly different path to its competitors of late, releasing underpowered hardware and focusing on gimmicks rather than games. Despite the success of the original Wii, the Wii U and handheld 3DS have experienced poor sales compared to competitors Xbox and Playstation.
Tomodachi Life is set to launch in the US and Europe in June.