Mega Man 2 is a platforming game for the Nintendo Entertainment System.

Following the gameplay of the first Mega Man game, Mega Man 2 has new features, like Robot Master stages increased from 6 to 8, E-cans that replenishes health to 100%, and support items/platforms 1, 2, and 3.

After his defeat, Dr. Wily created his own Robot Masters and continued his desires for world domination. Mega Man is the only one who can stop the evil scientist once again. But before he could reach him, he needs to defeat Dr. Wily's Robot Masters and obtain new powers from them.

Rockman No Constancy Weapons Patch v1.0

This patch allows you to play Rockman 2 with the weapons that appear in another ROM hack, Rockman No Constancy, by IKA. The weapons originate from the most recent version of the hack (v1.3) that was released in 2019, however unlike the v1.3 version Mega Man's sprites remain unchanged. A few cosmetic changes were also included, such as Roll appearing in the 'get weapon' screen and Mega Man's green color that is shown in the hard mode version of the hack.

In addition, the patch carries over the reduced post-hit invincibility frames from v1.0 of the hack's hard mode, but can be reverted with a supplemental patch to ease the difficulty if desired.

This patch aims to be compatible with existing Rockman 2 ROM hacks, so the behavior of the items were unchanged to accommodate for stage design that may rely on the mechanics of these items for stage progression (particularly within the Wily stages).

Database match: Rockman 2 - Dr. Wily no Nazo (Japan)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: FB51875D1FF4B0DEEE97E967E6434FF514F3C2F2
File CRC32: 30B91650
ROM SHA-1: 3E9DC769E1B63E73834786EC7FE9EDE7E706C72F
ROM CRC32: 6150517C