Square Enix has confirmed that a potentially seizure-inducing visual effect discovered in pre-launch footage of Balan Wonderworld will be resolved with a day one patch that will be delivered with the 3D platformer's launch later today.

Balan Wonderworld, a music action platformer led by Sonic Team veterans Yuji Naka and Naoto Oshima, will launch on Steam today. However, a full playthrough video has already been uploaded to YouTube, where fans have discovered that the game's climactic boss has rapidly flashing lights that risk causing seizures in certain players.

Obviously, seizure warnings are given in the following videos: 11:35 and and 12:40.

The effect appears to be inconsistent, appearing in some video captures but notably absent in others. This suggests that this is not an intentional effect like the seizure-inducing brine-dance visuals of Cyberpunk 2077. Rather, this appears to be a bug effect caused by platform-specific graphics settings.

Fortunately, "Balan Wonderworld" will receive a first-day patch this afternoon, and in a statement to PC Gamer, the publisher explains that this patch will resolve the triggering effect, along with a number of other issues that arose during the game's pre-release demo .

"Be sure to install the Day 1 patch before playing Baran Wonderworld. We have received reports that if you play the game with the patch unapplied, you are at risk of photosensitive epilepsy due to a potential flashing bug; the Day 1 patch will prevent this issue and improve the overall play experience."

Balan's demo received fairly negative reviews, with Polygon noting that the game's costume-change gimmick "adds little joy or surprise to a simple 3D platform jump."

Not every mechanical flaw in the game can be remedied in a single patch Not all of the game's mechanical flaws can be remedied in a single patch, but at least the game is no longer at risk of causing epileptic seizures.