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About One Man On Mars
Some bits of extra information about the developer

OneManOnMars Art & Games e.K. is an one man independant video game developer in Hamburg. Roman Fuhrer, the man behind OneManOnMars has been working on games since 2000 on over 50 games on several platforms. The development of Leif’s Adventure: Netherworld Hero started late 2015. OneManOnMars has been founded early 2017.

Where the magic happens

Although creating video games has not much to do with magic it is more about following a passion with a lot of creativity and effort.

Latest Developments
Stay up to date with all the latest news of Leif's Adventure.
Change Log Demo 2

Change Log Demo 2

Jul. 30, 2021 by

Fixes 2.2.6 (2021|07|23): Added debug information for armor and health bug. Added titles for map screen Added debug option in menu Fixes 2.2.5 (2021|06|17): Fixed issue where blue armor was not loaded in BC & RR Fixes 2.2.4 (2021|06|17): Fixed

Your Ghostly Friend – A closer look at the asymmetric two-character system.

Mrz. 31, 2021 by

Leif’s Adventure Netherworld Hero features a unique two-character system. Our hero Leif is supported by the superficial and super-cute sidekick Ghost. In the single-player mode, you can switch between two characters at the push of a button. Or you share

An unlikely hero!

Feb. 12, 2021 by

Every hero starts with a dream in his heart, but Leif started with a nightmare that haunted his dreams. In his dreams Leif relives his mother’s tragic death. His mother passed away giving birth to him. The guilt and longing

Game development progress!

Jan. 22, 2021 by

A new level is born. Leif’s Adventure combines 6 big worlds into a single, exciting adventure. Creating these worlds and filling them with challenging puzzles, fights, and riddles is a lot of work. A level is created out of several

Hub Level Reconstrucion

Nov. 20, 2020 by

It is time for a new Dev-Vlog. Today, I talk about how I rework the hub level of Leif’s Adventure and go through the process of sketching, creating, and implementing art assets in Unity3D.

Illustration Workflow

Okt. 16, 2020 by

In today’s dev vlog I make a step by step workflow analysis of the making of my latest community giveaway illustration. Talking of the giveaway. Make sure to check it out here:

Gamescom @ Home

Sep. 11, 2020 by

2020 is bringing life as we know it to a halt. Gladly we work in an industry that already feels at home in virtual worlds. And so, this time we did not have to hop on a train to travel

Weapons & Armor Sets

Jul. 30, 2019 by

Alright – finally a new update on Leif’s Adventure! It is quite a while since my last dev vlog. Almost half a year! There was much to do in the last few months. I wanted to focus on the production

Tokio Game Show 2018 Report

Nov. 3, 2018 by

  The Tokio Game Show has come and gone. And there has been so much to do since I am back from Japan. So I did not really find the time to write some words about the trip. But I

The Famicast is reporting about Leif’s Adventure: Netherworld Hero

Okt. 9, 2018 by

After Tokio Game Show the Famicast did some reports about Leif’s Adventure. This is what they had to say about the game on their web page: Game: Leif’s Adventure: Netherworld Hero (Swiss Games) JC: 2D platformer with 2-player support character.

Classic Action Adventure with a twist!

"Combines core action gameplay with a special co-op mode that lets even your grandma join in!"