Mega Man 4 is a platforming game for the Nintendo Entertainment System.

The game starts with the backstory of the original game as well as this one, which is a nice touch since Mega Man 1 had no such opening story sequence. Just like before, our hero must defeat eight robots, along with the mad scientist who created them...only this time it's apparently a different mad scientist!

As always, when you beat a Robot Master, you gain its weapon. Each Master is weak against one of the others' weapons. Additions from the previous entries are back, like energy tanks, Rush the robo-dog, and the ability to slide.

A welcome new feature is the ability to charge your main weapon, which gives you a slight edge if you haven't yet obtained a particular boss's weakness. There are two new support items: the balloon and the wire. The balloon lets you create floating platforms to jump onto (just like Item 1 in Mega Man 2) and the wire latches onto the ceiling and pulls you upward. They seem a little unnecessary since Rush is still present, but they give you more options to tackle any situation.

A password system is an added feature and lets you continue after defeating the 8 Robot Masters.

Here is a full level hack for Mega Man 4.

Mega Man 4 (USA) (Rev A).nes - NOINTRO
CRC32: 9ED9D3AF
MD5: 1A4FDAECE6AE32E5878029DA63866D94
SHA-1: 0FA8D2DADFB6E1DD9DE737A02CE0BFA1CD5FF65D
SHA-256: 49227BD63E49B40DCB4F44DBC2A6EEA27EC9E27ACDFCEFFBD856ADFE8E55CFA9