Make a wish game!

[Astro Ducky]

Granted, your first assignment is to retouch one of the most heavily-detailed manga ever produced.

I wish I knew more languages.

[CommanderEVE]

Awesome.

Granted! You now know every language in existence, including those which are dying and have died.

I wish my cat was not so old and mean.

[Tetsuwan Penguin]

A couple of Aliens land next door and experiment on your cat.
He's got his youthful spring back a million fold and is devoted to protecting you from the world. (Sounds like a familiar Tezuka Manga?)

I wish my "ship would come in". (Look that up in your Funk and Wagnalls).

[Shiyonasan]

Wish granted! Your ship comes in, but since you didn't specify whether you wanted the idiom or an actual ship, you get a toy ship in the mail!

I wish for a metal cover of the Astro Boy theme.

[EyeOdyssey]

Wish granted, but the cover was done by this band.

I wish Astroy Bo II was shown in a film festival with a live stream.

[Rejoyce]

Wish granted! But people stand in front of the camera, drop it, etc., and the internet goes down several times during the stream.
(That was the obvious answer, wasn't it?:lol

[Shiyonasan]

(That was the obvious answer, wasn't it?:lol

I agree; that is the obvious answer.

I wish to have my own Batcave.

[Tetsuwan Penguin]

I wish to have my own Batcave.

Wish granted, but watch out because they are VAMPIRE BATS!

I wish Tezuka productions would release all of those short videos we've been teased about on DVD or BD.

[gokaiblue]

Wish granted.....but they won't come out in America or anywhere else besides Japan.

I wish the wait at the dentist wasn't so long.

[Rejoyce]

Wish granted! Now, flocks of rabid dentists swarm your home when you least expect it, days before any appointment, wielding sharp tools and strange toothpaste flavors.

I wish I had a flash drive with infinite storage space.