History Headscratchers / SonicTheHedgehog2

* It seems the mobile phone port of ''Sonic 2'' was released with that Hidden Palace zone that never made it into the Genesis version (and its re-releases). Why did they stick the Mystic Cave 2-player track onto it instead of the Hidden Palace track that was intended which never saw any use in the game?

** Eggman probably didn't make Oil Ocean zone or Chemical Plant to begin with, they're just regular Industrial Zones owned by normal companies in the Sonic universe. Also, Oil is used to produce war machines, which would have lots of use for Eggman's robot army.

* Why is the Metropolis Zone [[NonIndicativeName a big factory instead of a big city?]] Did Sega just think "Factory Zone" would sound too prosaic?

* ''Sonic the Hedgehog 2'' has the Oil Ocean zone. Dr. Robotnik's boss machine in that level spends its time submerged in oil. When you defeat it, it explodes. Why does this not affect the oil the machine has been covered in the entire time? Or the entire ocean of it making up the level, for that matter?

* In ''Sonic 2'', what happens to all of those animals that fall from the sky in the Sky Chase zone?

* The fact that despite all the various ports of ''Sonic 2'', they've never fixed [[ArtificialStupidity Tails' Special Zone AI]].

** Why would Eggman logically put a wall-based model that can easily fall off the walls in an oil rig, where it could easily sink? Or in a water zone, where its circuits could get fried? Metropolis Zone is a pretty good place for it, plus it makes for a handy trap in case intruders storm the place! They're small and difficult to see (although not for us omniscient players) until it's too late, like an explosive mine.

** OP here, I take back what I said. I hadn't realized that ring requirements were higher when playing as Sonic & Tails. It's not so bad when Tails is controlled by another (competent) player, but when he's AI-controlled, expect him to lose all rings at some point during every special stage. That, combined with the fact that he has a tendency to run ahead of Sonic on occasions (mainly when Sonic jumps over mines and Tails runs straight into them, preventing him from jumping back to the back) and grab the rings for him, makes him more of a handicap than an advantage. After going through all special stages, I can confirm that unless you're playing with a friend, they're easier when playing as Sonic or Tails alone.
* Why did Eggman make the Oil Ocean Zone to start with. Judging from the factories in the background, it seems to have no purpose but to pollute. Considering crude oil is rather valuable, this makes Eggman (who's meant to be a genius) come of as extremely StupidEvil.
** Eggman probably didin't make Oil Ocean zone or Chemical Plant to begin with, they're just regular Industrial Zones owned by normal companies in the sonic universe. Also, Oil is used to produce war machines, which would have lots of use for Eggman's robot army.

* Why is the Metropolis Zone [[NonIndicativeName a big factory instead of a big city?]] Did Sega just think "Factory Zone" would sound to prosaic?

*** Nope, Eggman is behind both of those locations according to the manuals -- both Japanese and English.

*** Nope, Eggman made both of those places according to the Japanese manual.

** Eggman probably didin't make Oil Ocean zone or Chemical Plant to begin with, they're just regular Industrial Zones owned by normal companies in the sonic universe. Also, Oil is used to produce war machines, which would have lots of use for Eggman's robot army.