The first-person shooter video game Destiny has been making huge waves in the gaming community in its first week of release.

The game has sold $325 million worth in copies in the first five days alone, and developing company Bungie already announced plans for a paid-for upgrade in content, rolling out Dec. 9. Bungie's president Harold Ryan said the company has a 10-year plan for the game franchise, with its goal to continually be making new content available for users, keeping them engaged. 

Its reviews amongst users and press were mixed, citing the storyline as a particular weak point.

With the recent comments made about Destiny, Ryan said Bungie has heard the feedback and knows where it needs to improve.

"There are bits and pieces of the feedback for sure we agree with internally, as far as we wish we had put more time into some areas," Ryan said in a Eurogamer interview. "We've always been very critical of ourselves internally as well at Bungie."

However, despite the complaints for improvements, Ryan said that seeing players logging large numbers of hours on the game means that something about it must be working.

"When I read a lot of the feedback, and I see it's after playing for 100 hours, it's hard not to couch that in, 'Well, if you played the game for 100 hours ...' What other game do you play for 100 hours, right?" he said. "As we play the game and test the game, there are all kinds of things we want to improve and evolve, and we are improving them and evolving them over time."

The first expansion, named The Dark Below, will be available to gamers for a single download cost of $20, according to Gamespot. It is the first of two scheduled content upgrades. The second, named House of Wolves, does not have a price of release date yet.