The Final Fantasy XV: Judgment Disc demo released in Japan late last week is riddled with bugs, according to Twitter, which is causing concern among users as to the final state of the retail game. Final Fantasy XV director Hajime Tabata took to Twitter today to address those worries.

Here is the first series of tweets (1, 2, 3, 4):

“Thank you for playing the demo. On the subject of bugs, we are already fixing them and plan to offer an update to users able to apply patches. Please rest assured that we will identify the frequency of the bugs and make fixes as needed. “Is anyone curious about the movie in the demo in which Noctis’ country is attacked? If you are, please look into watching Kingsglaive, where the battle of [Noctis’] father Regis is depicted in the background of the game. “As for this Kingsglaive movie, we did not put it in because of the storage capacity of the master disc. However, we are preparing an upgrade to the main game as a patch. That is why the demo reflects some of that upgrade. “Alongside the release of the Judgment Disc, we announced that distribution of the Platinum Demo will end in about one week. However, after receiving many requests to extend it, we have changed the availability period to last the rest of the year. Users who have not played the demo yet can rest assured.”

In the second series of tweets, Tabata addressed users who may not be able to apply a patch (1, 2, 3):

“I will now answer regarding the delay and patch. We took two months to completely get rid of bugs as not to obstruct everyone who purchases the game from playing it and reaching the ending. The fact that we are getting high praise for the demo can be said to be the fruit of our labor. “Even so, while it is difficult to fix everything down to the smallest bugs, we will deal with it via an amendment patch. Since it is impossible to get rid of the bugs in an open-world game in short time with our current technology, please understand that we will fix them at a steady pace. “The freedom-of-play gameplay style offers huge variation. And while there are sets of rules as to how you play, the combination of the things you can do in the open-world is too great for our own understanding. However, development is evolving every day. Please stick with us for a long time!”

Final Fantasy XV is due out for PlayStation 4 and Xbox One on November 29.