Rockstar Games' "Red Dead Redemption" became prematurely available on the Xbox One through its backwards compatibility list.

Gamespot reported that the game became available for download on Sunday even though it was not part of the searchable items on the site.

It was also noted that the game is already working and can now be played by gamers. But it claimed that for gamers to play, they need to have the digital version of the game for Xbox 360.

Those without a digital copy of the game will be prompted with the "Bundle Only" option on the website.

But its premature availability was reportedly due to an error, according to Xbox Live director of programme Larry Hryb.

"Microsoft tests all Xbox 360 games with our emulator to ensure a quality experience across a breadth of titles," Hryb said in a Reddit post.

He claimed that the error made some of the games, which were still in the testing phase, available to the public.

"We have since removed access to those games, and apologize for any confusion this may have caused. We will have more information on upcoming releases soon," he added.

On his Twitter account, Hyrb also explained that some of the games they were testing for quality became available because of the said error.

The Gamespot report added that accessing Red Dead Redemption at this stage would violate the Xbox Live Code of Conduct, which states that games should not be played unless they are already authorised to be released.

In addition, Eurogamer claimed that the trick for accessing the game has already been inaccessible, which led players to download the game from the Xbox One store.

The same report also claimed that "Red Dead Redemption" was not the only casualty of the errors. Other games like "Tekken Tag Tournament 2," "American Nightmare," "Castlevania: Symphony of the Night," "Halo Wars" and "Left 4 Dead 2" also became available for players.

The action-adventure video game release in 2010 has not yet been made available for the Xbox One console, though players are already looking forward to it this year.

After its availability on the Xbox One, players will anticipate the coming of "Red Dead Redemption 2," which is also expected to be available this year. and is believed to have new system features, along with an update of its firmware.

Movie Pilot speculated seeing developers of the game having Japan as the new setting for the new game.

It also added that fans will want to see a "more dynamic fighting system" for this upcoming installment.