Mega Man x Street Fighter II

This game is a spin-off sequel to Mega Man x Street Fighter, but you control different Street Fighter characters, rather than Mega Man.

Gameplay
The gameplay is similar to the Mega Man series, you cross different stages, navigating through platforms and shooting opponents down. In the end you fight a final boss, which happens to be a Street Fighter character. After you defeat that boss, you gain the ability to turn into that character and use his abilities.

Interface

 * Life bar. Your character has a limited lifebar which depletes as you receive hits and damage. There are items around the stages that allows you to refill your life bar.
 * Super bar. Special moves and abilities don't depend on the Super bar, instead you build the super bar every time you deal or recieve damage. There are also items around the stages that allow you to refill your super bar. Once your Super bar is full, you can perform a Super Combo.

Controls

 * Directional arrows allows you to move your character, limited to left and right.
 * A button allows you to jump and controls your jump.
 * B button is your basic attack, either a punch or a kick. Pressing a few times in a row allows you to perform quick auto-combos. Combinations between A button plus a directional result in different moves (example, standing A for Ryu is a punch, crouching A is a sweep kick, forward + A is a delayed punch).
 * Select button changes your character on the run.
 * Start button pauses the game and opens the game menu.

Special abilities
Every character has different special moves to use.
 * Special Move 1 (Charge shot). Holding down the B button for a while allows you to perform your character main special move (usually a projectile).
 * Special Move 2 (Move maneuver). Holding down the B button then down and letting go the button performs another one of your character special moves, usually one involving movement.
 * Super Combo. Holding the B button longer than Charge shot and with your Super gauge full, allows you to perform a special move as you let the button go. You can abort your special move anytime by pressing down + A.

Options

 * Manual input. This option allows you to perform your Special and Supermoves in the traditional way, using the classic Street Fighter inputs, rather than (or in addition to) charging your Shot. The Supergauge still needs to be full to perform the Super Combo.You can turn Manual Input On or Off in the Pause screen.

Characters
You star the game picking one from 8 different characters, then you pick your opponent and start the first level.

Ryu

 * Special Move 1: Hadouken (down, forward + B). Ryu shoots a blue fireball that destroys one opponent in line and passes through it.
 * Special Move 2: Tatsumaki Senpuu Kyaku (down, back + A). Ryu performs a stationary whirlwind kick. You can use the left and right arrows to move the character around the screen. Can be performed in air.
 * Super Combo: Shinkuu Hadouken (down, foward, down, forward + B). Ryu performs a more powerfull fireball, causing the screen to freeze for a second, the ball crosses through everything until it disappears through the edge of the screen.

Ken

 * Special Move 1: Hadouken (down, forward + B). Ken shoots a red fireball that destroys one opponent in line and passes through it.
 * Special move 2: Shoryuken (forward, down, forward + B). Ken jumps and perform an upwards jab.
 * Super Combo: Shinryuuken (down, foward, down, forward + B). Ken performs a vertical jab surrounded by fire, that stuns the opponent and hits multiple times.

Guile

 * Special Move 1: Sonic Boom (charge back, forward + B). Guile shoots a long projectile that crosses through multiples opponents.
 * Special Move 2: Flash Kick (charge down, up + B). Guile performs a somersault kick upwards.
 * Super Combo: Sonic Hurricane (charge back, forward, back, forward + B). Guile creates an energy vortex around him that destroys several opponents.

Chun-Li

 * Special Move 1: Kikouken (down, forward, B). Chun-Li shoots a little but powerful fireball.
 * Special Move 2: Lightning Legs (down + B, B, B, B). Chun-Li performs a barrage of kicks that also stop projectiles. The move won't stop unless you stop pressing B.
 * Super Combo: Kikouken (down, forward, down, forward, B). Chun-Li releases a big energy shield on front of her that stops projectiles and deals massive damage.

Blanka

 * Special Move 1: Rolling Attack (charge back, forward + B). Blanka hurles forward transformed into a ball.
 * Special Move 2: Electric Thunder (down + B, B, B, B). Blanka starts emiting electricity, what protects him, but it's still vulnerable to projectiles. The move won't stop unless you stop pressing B.
 * Super Combo: Ground Shave Rolling (back, forward, back, forward + B). Blanka turns into a ball and rolls through the ground destroying everything. He cannot jump but climbs over surfaces. He's completely invulnerable unless you fall in a hole. You can control his direction by pressing the directional arrows left or right.

Zangief

 * Special Move 1: Green Hand (forward, down, forward + B). Zangief turns and attacks with an energy hand, that stop projectiles and deals good damage.
 * Special Move 2: Spinning Piledriver (360° + B). Zangief runs towards the nearest opponent, gaining hyper armor, and he grabs and performs a piledriver on it.
 * Super Combo: Final Atomic Buster (720° + B). Must be used close to the opponent. Zangief becomes completely invulnerable and performs two Spinning Piledrivers on the opponent. You can delay this move by holding down the button for a couple seconds.

E. Honda

 * Special Move 1: Super Zutsuki (charge back, forward + B). Honda hurls forward with a headbutt. Slower than Blanka's Rolling Attack, but more damage.
 * Special Move 2: Thousand Hands Slap (tap down, B, B, B, B). Honda performs a barrage of hand slaps on front of him, you can control his movement using the directional arrows but he's very slow. The move won't stop unless you stop pressing B.
 * Super Combo: Oni Musou (back, forward, back, forward + B). Honda performs two consecutive Super Zutsuki strikes.

Dhalsim

 * Special Move 1: Yoga Fire (down, forward + B). Dhalsim spits a fire projectile.
 * Special Move 2: Teleport (forward, down, forward + A+B). Dhalsim teleports at short distance. Can be performed in midair.
 * Super Combo: Yoga Catastrophe (down, forward, down, forward + B). Dhalsim spits a big fire orb that moves forward and absorbs projectiles, but dissipates after a while.

Final Bosses
These final bosses are only playable after you finish the whole game.

Balrog

 * Special Move 1: Dash Straight (charge back, forward + B).
 * Special Move 2: (Buffalo Headbutt (charge down, up + B).
 * Super Combo: Crazy Buffalo (charge back, forward, back, forward + B).

Vega

 * Special Move 1: Rolling Crystal Flash (charge back, forward + B).
 * Special Move 2: Sky High Claw (charge down, up + B).
 * Super Combo:(Super Wall Leap (charge down/back, down/forward, down/back, up/forward + B).

Sagat

 * Special Move 1: Tiger Cannon (down, forward + B).
 * Special Move 2: Tiger Knee (forward, down, forward + B).
 * Super Combo: Tiger Genocyde (down, forward, down, forward + B).

M. Bison

 * Special Move 1: Psycho Crusher (charge back, forward + B).
 * Special Move 2: Head Press (charge down, up + B).
 * Super Combo: Knee Press Nightmare (charge back, forward, back, forward + B).

Akuma

 * Special Move 1: Gou Hadou (down, forward + B, can be performed in air).
 * Special Move 2: Ashura Warp (forward, down, forward + A+B).
 * Super Combo: Shun Goku Satsu (B, B, forward, B, A).

Related games

 * Mega Man x Street Fighter III
 * Mega Man x Street Fighter Alpha

Connectivity
Mega Man x Street Fighter II, III and Alpha can connect between themselves. After finishing any of the games, you can connect to other(s) and use the characters from the game you finished on the other(s).