Your Health in Monster Bash is Determined by the Difficulty Level.

Easy: 9 Units of Health
Normal: 6 Units of Health
Hard: 3 Units of Health

Press Z + F10 during game play for five additional lives.

Registered version only. Hold down [Z] first; since the [F10] key, by itself, has meaning in the game, the cheat won't work if you push both down at the same time and the [F10] is the first to register.

https://www.youtube.com/watch?v=nNHxPVQNtPE
Tagline: "Your pocket will never go empty"
1993
Released: Apogee Software
Genre: 1-Player Platformer

NOTE: The 3 Episodes in the game each with have their own excutables. The first one being the Shareware Version while the last 2 are part of the Registered Version. When you get the Commercial Version, you get a Registered Version of Part 1 which has the Cheat Codes Unlocked. However, before buying this game, You'll need to play the Shareware Version first before playing the last 2 Episodes. And if you can't Survive on any difficulty level via the Shareware Version, you won't get far in the Commercial Version.

The Apogee Registered Versions with their own Excutables also apply to Cosmo's Cosmic Adventure, Dark Ages, Word Rescue, Math Rescue, Bio Menace, Crystal Caves, Commander Keen Episodes 1-6, Secret Agent, Arctic Adventure, Duke Nukem 1 & Paganitzu.