Heavy Barrel: Contra 7 EX (Heavy Contra)

CONTRA 7 EX is a hack of the US version of the Heavy Barrel game for the NES.

List of features, additions and changes:

1) Added new title screen.

2) The sprites of the protagonists of the original game have been modified to include sprites of the protagonists of the games of the CONTRA saga.

This patch can be applied directly on two types of ROMs:

1. Heavy Barrel (USA).nes (The original US version of the game).

2. Contra 7 (Unl).nes (An old unlicensed hack of Heavy Barrel that added a contra-styled title screen).

https://www.youtube.com/watch?v=riPWlZdwriI

Database match: Heavy Barrel (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: E2472CF182961F8FBC378AC41CED33E408A54C27
File CRC32: 1E79B8A6
ROM SHA-1: 3065EF157AB5F34FA05022261D7BF6EF79DAD5C9
ROM CRC32: 34EAB034