What's the difference between all the Street Fighter 2 versions?

[Salduchi]

I've seen at least 3 different box covers. What's the difference? The only one I have is Special Champion Edition and I love it.

Someone said that this is the largest game on the Genesis. True? I don't see what makes this game so big memory wise.

[Assman]

SUPER Street Fighter 2 is the biggest game on the Genesis. It has 4 extra characters and brand new moves for the existing characters. You have all that animation, all the backgrounds and all the samples, all of which I believe are uncompressed. That shit takes up space.

[Despatche]

There are only two Street Fighter games on the Mega Drive, and both are versions of II.

Street Fighter II': Special Champion Edition is a port of both the arcade game known as II': Champion Edition (the first update to SFII) and the later II' [Turbo]: Hyper Fighting (the second update). Technically, it's a port of the SNES "Street Fighter II Turbo". I'm not sure which one's better, but one of them is clearly the best conversion (not port) of the game out there.

There is also a hacked (!) prototype for an earlier Champion Edition port. The earlier product itself was scrapped when Sega yelled at them about the seemingly better SNES II Turbo conversion on the way. (Not that Hyper Fighting is even that good.)

Super Street Fighter II: The New Challengers is a port of the arcade game of the same name (the third and major update to SFII, meant to be a total remake), though unfortunately even the original Super wasn't really finished. It adds four characters to the original twelve, but the game is largely Hyper Fighting without the speed. Too bad there was never a port of Super Turbo...

[retrospiel]

SSF2 on MD does have a Turbo mode though. You can adjust the game's speed by pressing left/right at the Title Screen.

[fluxcore]

Turbo mode in Super SF2 is not the same as Super SF2 Turbo though. Unlike Special Champion Edition with the turbo mode which IS SF2T.

[tryphon]

SSF2 on MD does have a Turbo mode though. You can adjust the game's speed by pressing left/right at the Title Screen.

SNES version too IIRC (but it isn't Super SF2 Turbo either)

[Hans-CD]

I've seen at least 3 different box covers. What's the difference? The only one I have is Special Champion Edition and I love it.

Someone said that this is the largest game on the Genesis. True? I don't see what makes this game so big memory wise.

Actually there are only two SFII games that have been released on the Genesis (even if technically one of them is two games in one).
-SF2 SCE which contains the CE (" ' or Dash in Japan ") and the Turbo (Hyper Fighting in Japan) editions.
-SSF2

I guess you probably saw the different artwork on the US SF2CE box and maybe thought that was a different game?

If you want to know the difference between each version I will gladly list the major changes:

SF2-> SF2 CE = You can play as the 4 boss characters, Vega, M.Bison, Sagat and Balrog. Both players (be it human or cpu) can play with the same character simultaneously, every character has an alternate colour for this reason.A few backgrounds were altered (either in colour or by removal of some elements) and character portraits were redrawn for some characters (most notable, Ryu). This version is available on Sega Megadrive/Genesis as SF2SCE

SF2 CE-> HF = Some characters got new moves (most noticeable Chun Li's fireball) and overall game speed got an increase. A new colour palette was added for each character, and that new palette became the new default colour (except for one character which retained his WW and CE default colour). This version is available on Sega Megadrive/Genesis as SF2SCE

SF2 HF-> SSF2 = First CPS2 Street Fighter. "CPS1 chains" got removed (canceling rapid weak light kicks into any punch). Four new characters (T Hawk, Dee Jay, Fei Long and Cammy); the number of stages you needed to clear in order to win the game remained 12 however.New interface, new attract mode, new music, different or altered winposes (for the better).Most character got new animation frames for attacks (which clashed a bit with the old sprites, sometimes even altering a character height in certain frames).Boss characters got new animations for normal attacks ( Sagat didn't have a light punch before SSF2 for example).Every character received 5 new colour palettes, in addition to their retained WW, CE and HF ones. The default colour went back to their WW version (example: Ryu white kimono, red heaband). This version is available on Sega Megadrive/Genesis as Super Street Fighter 2 : The New Challengers

As someone else already mentioned there is actually another version of the game , Super Street Fighter 2 Turbo (X: Grand Master Challenge in Japan) but it never received a MD or SNES port.

Please note that the changes I mentioned are for the arcade versions but most alterations were carried over to the ports.

[tryphon]

SF2 -> SF2CE : some moves have been altered (most noticeable : Ken and Ryu special moves have different behaviour). "Stunning" seems to worl a little differently too and most attacks seems to make less damages (not sure for these two though).

[fluxcore]

SF2 HF-> SSF2 = First CPS2 Street Fighter. "CPS1 chains" got removed (canceling rapid weak light kicks into any punch).

AFAIK CPS1 chains don't work in the MD/SNES SF2 ports :/

[Vludi]

SF2 -> SF2CE : some moves have been altered (most noticeable : Ken and Ryu special moves have different behaviour). "Stunning" seems to worl a little differently too and most attacks seems to make less damages (not sure for these two though).

Also not sure but the bosses dealt too much damage on the original SF2 compared to CE, and the damage ecuation seemed different, like in the original game proximity when doing something like a Shoryuken was more important.

[Hans-CD]

AFAIK CPS1 chains don't work in the MD/SNES SF2 ports :/

I don't know about SNES, as I didn't test them, but they work in SF2CE. Tested them right now with a 6 button pad.

[Kogen]

The Super Nintendo one has a special frequency of sound for people on the autistic spectrum. It helps their ears understand sound waves better so they do not have fits (seizures). Nintendo was a Pioneer in autistic spectrum disorder software back in the day.

[fluxcore]

I don't know about SNES, as I didn't test them, but they work in SF2CE. Tested them right now with a 6 button pad.

Hrm, I couldn't get them to work last time I tried, but then I'm used to arcade stick. I'll have to re-test this now.

I know that cr.lk, cl.HP works as a link, but I couldn't get the cps1 chain version of that combo to work.