The developer asked me to play this on my stream and I did, the game not only has stolen assets from Duke Nuke and Doom but also crashes regularly, my chat was begging me to stop playing, now the creator of this game is harrassing me for leaving an honest review. Edit: Also note how all the other reviews were via free keys given by the developer, rather fradulent too.
Johann Weiss
- Release Date:
- May 22, 2020
- Developer:
- JMAA Games
- Publisher:
- JMAA Games
- Platforms:
- Windows Mac Linux
Game Tags
About This Game

Slay and pray, or die trying...
Scheisse! The evil LaVey Order has captured your sister Joanna and taken her to the Church of Satan to be sacrificed! Fight your way through hordes of demons and thwart the satanic cult's plans to summon Hell on Earth! Use your agility, skill, and a variety of deadly weapons to slaughter your way through the tides of Hell and take on the leader of the LaVey Order, Behemoth LaVey. Visit different locations such as the streets of Berlin, the towering Church of Satan, and even all the way to depths of Hell in this riveting action-adventure platform.
Johann Weiss is a campy retro action-adventure platformer combining the style and difficulty of play of a Metroidvania with the aesthetics and gameplay of the early Duke Nukem games. You’ll be wall-jumping your way into Hell as a demon-killing machine.

- Four episodes with increasing challenge and full of action
- A challenging gameplay full of tricks, traps, and demons to face.
- Retro-style graphics in the fashion of the first Duke Nukem games, a true homage to the old DOS action platformers.
- Metroidvania style gameplay with wall-jumping and double jumping.
- A badass Sound Blaster 16 sounding soundtrack
Will you save your sister and the world from an imminent sacrifice and a demonic invasion? Or will you die trying? LaVey won't make it easy for you, while he sends his hordes of demons and traps unto you. Good luck.
Screenshots
User Reviews
YUMMY POO
Rating / Bewertung: 07/10 English: Nice action-packed jump & run game in the old Duke Nukem style, although some of the graphics could be a bit better. Everyone should get along well with the controls in the game after getting used to it. All in all a clear recommendation from my side. German: Nettes actionreiches Jump & Run Spiel im alten Duke Nukem Style, wobei manche der Grafiken doch etwas besser sein könnten. Mit der Steuerung im Spiel sollte jeder nach einiger Gewöhnungszeit gut klar kommen. Somit insgesamt eine klare Empfehlung von meiner Seite aus.
Pain :)
System Requirements
Minimum
- OS *: Windows 7, 8, 10 - 32bit/64bit
Recommended
- OS: Windows 10 64bit
FAQ
How much does Johann Weiss cost?
Johann Weiss costs €4.99.
What are the system requirements for Johann Weiss?
Minimum: Minimum: OS *: Windows 7, 8, 10 - 32bit/64bit Recommended: Recommended: OS: Windows 10 64bit
What platforms is Johann Weiss available on?
Johann Weiss is available on Windows PC, macOS, Linux.
Is Johann Weiss worth buying?
Johann Weiss has 40% positive reviews from 5 players.
When was Johann Weiss released?
Johann Weiss was released on May 22, 2020.
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