Mortal Kombat II

Platforms

Arcade, Super Nintendo, Sega Genesis, Sega Saturn, Sega Master System, Sega 32X, Amiga, Game Gear, PlayStation, PC, Game Boy.
Also available on PlayStation 2, GameCube and X-Box as part of Midway Arcade Treasures 2, PSP as part of Midway Arcade Treasures: Extended Play, and PC as part of Midway Arcade Treasures: Deluxe Edition.

Release Dates:

Arcade: 1993.
Super Nintendo: September 9th, 1994.
Sega Genesis: 1994.
Sega Saturn: March 28th, 1996.
Sega Master System: n/a.
Sega 32X: 1994.
Amiga: 1994.
Game Gear: September 9th, 1994.
PlayStation: August 2nd, 1996.
PC: 1994.
Game Boy: October 27th, 1994.

Playable Kombatants:

Arcade, Super Nintendo, PC, Sega Genesis, PlayStation: 12: See select screen.
Game Boy: 8.

Hidden (Non-Playable) Kombatants:

Arcade: Jade, Smoke, Noob Saibot.

Bosses:

Sub-Sub-Boss: Shang Tsung.
Sub-Boss: Kintaro.
Boss: Shao Kahn.

Finishers:

All versions (?): Each character can perform 2 Fatalities, Babality, Friendship, Stage Fatalities.

Finishers Guidelines:

Friendship: To perform a Friendship, you must not press any Punch button in the winning round.
Babality: Same as above.

500 years ago, Shang Tsung was banished to the Earth Realm. With the aid of Goro he was to unbalance the furies and doom the planet to a chaotic existence.

By seizing control of the shaolin tournament he tried to tip the scales of order towards chaos. Only seven warriors survived the battles and Shang Tsung's scheme would come to a violent end at the hands of Liu Kang.

Facing execution for his failure and the apparent death of Goro, Tsung convinces Shao Kahn to grant him a second chance..

Shang Tsung's new plan is to lure his enemies to compete in the Outworld where they will meet certain death by Shao Kahn himself.

Now, the Kombat kontinues...

Secret Kombatants:

Jade: In the match before the "?" sign, win a round using only Low Kick and you'll fight against Jade.
Smoke: When fighting at The Portal, if you uppercut your opponent, Dan Forder might appear in the bottom right corner of the screen saying "Toasty!", when that happens press Start and you'll be teleported to Goro's Lair to fight against Smoke.
Noob Saibot: To play against him, you must win 50 wins in a row. (25 on Sega Genesis)

Other Secrets:

Pong: To play the classic game Pong, you must win 250 fights in a round.