Among the costumes added in the Seal the Deal DLC is the Virtual Kid costume, which replaces Hat Kid's regular model with a low-poly version as a nod to late 1990s collect-a-thons (which the game is a throwback to). Within the game's code is an unused additional shader for this costume which mimics the distinctive jitter found in titles for the original PlayStation. Reportedly, this additional effect was disabled because director Jonas Kaerlev didn't consider it a good match for the game's "cute" aesthetic.