Xbox One's "Hitman" will experience a return of the game's Contracts mode, leaving many gamers wondering if it will make it one of the more popular games on the next-generation console.

The "Hitman" series creator IO Interactive released a open letter to fans mentioning that the game will retain the "core" of the series, that is, being able to use a "wide range" of tools to take out a diverse group of targets at a global scale, GameSpot.com reports.

Kotaku listed Assassin's Creed IV Black Flag as one of Xbox One's best games, leaving many wondering if it will be the next-generation console's best zombie-related game.

"Finally this year, with the pirate-themed Assassin's Creed IV: Black Flag, the series has taken a major and unequivocal step forward. It doesn't lose all of the series' bad habits-hello, follow missions-but it improves many longstanding problems with better stealth, easier-to-navigate cities, and sidequests that actually feel like they help make your character more powerful," the website writes.

PlayStation 4 sold 4.2 million units through the end of 2013 which is approximately 1 million more than its competitor Xbox One, CNN reports, leaving many wondering if the Sony next-generation console has a better games list.

Halo 5 and Metal Gear Solid 5 have been confirmed for Xbox One's 2014 games list, leaving many gamers wondering if the two RPG titles will be the top games for the next-generation console.

Earlier this week, fans went wild after Halo 5 was excluded from Xbox One's 2014 games list because a complete name for the game has not been finalized.

"Xbox Wire today mentioned a few 2014 titles; Halo on Xbox One not listed due to official name of the next title not announced yet," Halo PR Manager Rob Semsey wrote on Twitter.

"Rest assured your next Halo journey WILL begin in 2014. #staycalm."

Square Enix's Metal Gear Solid 5 Ground Zeroes is rumored to be one of Xbox One's most popular games, according to the New York Daily News.

"All eyes are on the new Metal Gear: Ground Zeroes game," the website writes.