Metal Gear Solid 5 creator Hideo Kojima revealed the Phantom Pain still has a way to go before completion, IGN.com reports, leaving many gamers wondering if the game's release date will be delayed until the end of 2014.

"If I were to put it in Hollywood movie terms, the prologue, that is Ground Zeroes, would be similar to the first 10-15 minutes that are meant to 'captivate' [the audience]," he said, according to the website.

"At first, something will happen, then the title will appear like 'bam!' and then nine years later, a big event will be the start [of Metal Gear Solid V]. That's how the story will be connected. As far as the game itself goes, The Phantom Pain will take place in an immense open world map, while Ground Zeroes takes place in a smaller open world."

Earlier this week, he also revealed that the game's sequel is going to "take a while" due to the massive scale, according to Kotaku.

Kojima also revealed that he decided to release Metal Gear Solid 5: Ground Zeroes in an effort to appease fans pressuring the game's developers.

"The main game - The Phantom Pain - is extremely massive and is still going to take a while. I discussed the situation with the marketing team and after much deliberation decided at least to let people play the prologue," he said during the interview.