You didn't think Mighty No. 9 was going to launch without one more delay, did you?

The Xbox 360 version of the game is being delayed "for several days" after a bug was discovered in final testing, developer Comcept acknowledged in a blog post.

Comcept said it has already resubmitted the game to publisher Deep Silver and to Microsoft "and we expect it to go gold within a few days if all goes according to plan."

Mighty No. 9 launches today after a history that included almost $4 million in crowdfunding and repeated disappointments. Comcept struggled to fulfill stretch goal promises that added platform after platform to a project that originally began for PC only. Comcept pushed back the game's launch date or window three times over the past 18 months.

Mighty No. 9 also launches on PlayStation 3, PlayStation 4, Wii U, Windows PC and Xbox One. Versions for PlayStation Vita and Nintendo 3DS will arrive later. Versions for Linux and Mac "are in final testing by Deep Silver," Comcept said. "These two versions of the game should be ready within a few days as well."

Xbox 360 buyers/backers will be given a Steam code to download Mighty No. 9 on PC while they wait for the Xbox 360 launch.

Meanwhile, creator Keiji Inafune held a livestream in which he acknowledged the game's disappointing performance. (The game's Metacritic average on PlayStation 4 and Xbox One is currently 60.) According to Vice, Inafune said the game is free of microtransactions and isn't abusive about DLC. "They put it all in," he said, according to Ben Judd, who was acting as interpreter during the stream. "So for now, this is what you see and what you get for the Mighty No. 9 world.

"But again, we can hope that if things go well, there'll be sequels," Inafune added. "Because I'll tell you what, I'm not getting my 2D side-scrolling fill. And at the end of the day, even if it's not perfect, it's better than nothing."