Kirby and the Forgotten Land uses 3D witchcraft to make you better at the game

gamesradar.com:

Kirby and the Forgotten Land uses several clever tricks to help you land hits and jumps even when you're technically a little off, kind of like aim assist but for a platformer.

Nintendo shared a few clips of these helping hands in action in its most recent Ask the Developer article. One of developer HAL Laboratory's greatest workarounds uses positional hit detection to ensure that even if an attack wouldn't actually connect, if it looks to the player like it would, the game will give them the hit. This tweet from Gosokkyu shows the effect in-game: 

one of the ways they've adjusted to make the game easier in 3D is by using positional hit detection based on the camera angle—in essence, even if the attack doesn't truly collide, if it looks to the player like it hit, then it'll hit pic.twitter.com/a41Z8RM9hnMarch 24, 2022

"The game accounts for the player's perspective by tracking the positions of Kirby and the camera," explains HAL's Tatsuya Kamiyama. "It then maps out a range in which attacks may appear to land. If an attack is within that range, the attack will hit. By doing so, even people who are not so good at 3D action games can attack enemies without any stress."

This is functionally similar to the aim assist used in countless shooters – both features give players some wiggle room in whether their attacks are successful – but the tech behind it seems much more sophisticated. Kirby and the Forgotten Land's positional detection was purpose-made to ensure that the pink protagonist's jump to 3D went as smoothly as possible.

In a similar vein, Kirby's jumps are supported by a "fuzzy landing" system which makes jumping after landing more consistent. Because some high or top-down camera angles can obscure Kirby's distance