How could age regression be used in a video game better?
From what I see we have examples of it used as:
>competitive games
To pretty much say fighting someone was like fighting a baby, Considering how this win condition is met with the user giving themselves a self handicap I'd say it was used pretty well in Mortal Kombat for example. JoJo's Bizarre Adventure: Heritage for the Future has it as a non finishing move though.
>a status affect in the game
Could be used by the game to pretty much have the game insulting you itself rather than another competitive player for how this usually happens. Zelda: Oracle of Ages, Super Ghouls n Ghosts, GnG for Wonderswan and the fan remake of it, Maximo: Ghosts to Glory. Bayonetta 1 and 2 as a status affect.
Some games let you apply it yourself though. Scribblenauts and Tomodachi Life for example.
>story examples
Where it really doesn't come into play or could depending on the game. Funny enough there are a lot of games with ar in them just as a story element. Shadow of the Colossus, Maganogi, Zelda: Majora's Mask, Zelda: Breath of the Wild, Zelda: Ocarina of Time, Monkey Island 2 and 3, Fantasy Life, Henry Hatsworth and the Puzzling Adventure, The Adventures of Little Ralph, Fallout 3's Tranquility Lane, Space Ace, Waxworks, Zanki Zero, Final Fantasy Chrystal Chronicles: Rings of Fate, Light Fantasy 2, Earthbound, Ninjala. Bayonetta 2 with Loki at the end. Chrono Cross. Terranigma, JoJo's Bizarre Adventure: The 7th User.
Chances are I'm missing some.
>non standard game overs
Think of it like a Choose your own Adventure book ending here. Examples are: King's Quest 2's youth potion, Space Ace again uses it here.