Mega Man 4 was published by Capcom, released in 1991.

What kind of game is Mega Man 4?

Mega Man 4 is a action, platform game for the NES / Famicom.

Can two people play Mega Man 4?

No. Mega Man 4 is a single-player game, so it has no two-player mode.

How much data does Mega Man 4 load?

The Mega Man 4 ROM is 280 kB. It is fetched once when you press play and then cached by your browser, so returning to the game does not download it again.

Which emulators can run Mega Man 4?

Mega Man 4 runs on NES / Famicom and Nestopia UE (Accurate). You can switch between them from the emulator list further down this page if one performs better on your device.

Mega Man 4 Game (1991) - NES

Name: Mega Man 4
Availability: InStock
Author: Capcom

Action / Button	Keyboard Key
D-Pad (Up / Down / Left / Right)	`Arrow Keys`
Button A	`Z` or `J`
Button B	`X` or `K`
Button X / Turbo A	`A` or `U`
Button Y / Turbo B	`S` or `I`
Select	`Shift`
Start	`Enter`

Gamepad Input	Retro Function	Keyboard Key
D-Pad / Analog	Character Movement / Steering	`▲` `▼` `◄` `►`
Button A (East)	Primary Action / Attack / Fire	`Z` / `K`
Button B (South)	Secondary / Jump / Cancel	`X` / `J`
Button X / Y	Special / Turbo / Extra Fire	`A` / `S`
Select	Insert Coin / Select Option	`Right Shift`
Start	Game Start / Pause Game	`Enter`

Gamepad Input

Retro Function

Keyboard Key

D-Pad / Analog

Character Movement / Steering

▲ ▼ ◄ ►

Button A (East)

Primary Action / Attack / Fire

Z / K

Button B (South)

Secondary / Jump / Cancel

X / J

Button X / Y

Special / Turbo / Extra Fire

A / S

Select

Insert Coin / Select Option

Right Shift

Start

Game Start / Pause Game

Enter

Emulator Core Engine	Technology	Multiplayer	Gamepad	Touch	Ads	Action / Switch
EmulatorJS (Default WebAssembly)	`WebAssembly / JS`	YES	YES	YES	NO	▶ ACTIVE
NES / Famicom (Recommended)	`WebAssembly / Libretro`	YES	YES	YES	NO	PLAY ⚡
Nestopia UE (Accurate)	`WebAssembly / Libretro`	YES	YES	YES	NO	PLAY ⚡

Emulator Core Engine

Technology

Multiplayer

Gamepad

Touch

Ads

Action / Switch

EmulatorJS (Default WebAssembly)

WebAssembly / JS

YES

▶ ACTIVE

NES / Famicom (Recommended)

WebAssembly / Libretro

YES

PLAY ⚡

Nestopia UE (Accurate)

WebAssembly / Libretro

YES

PLAY ⚡

Released by Capcom in 1991, Mega Man 4 is an action platformer for the NES that shook up the series’ formula by introducing the chargeable Mega Buster. Alongside a new set of eight Robot Masters to defeat and weapons to steal, it forces you to master precision jumping and pattern recognition as you make your way toward a showdown with the mysterious Dr. Cossack.

How to play

Your objective is to traverse hazard-filled stages, defeat the Robot Master at the end, and claim their weapon to exploit the weaknesses of the remaining bosses. Use the Arrow Keys to move, X to jump, and Z to shoot or charge the Mega Buster, while Enter and Shift handle Start and Select.

Tips

Hold Z to charge the Mega Buster as you navigate levels; walking into an encounter with a fully charged shot ready makes dealing with heavy enemies much easier.
Toad Man is generally the easiest boss to tackle first. His screen-clearing rain attack can be completely prevented if you shoot him whenever he begins his dance.
Remember that boss weapons consume energy. Save them for the specific bosses they are super effective against, and rely on your regular Buster for standard enemies.