OneManOnMars Newsletter
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"A love letter to the 2D-action-adventure genre with deep mechanics and couch co-op for everyone."


A Nintendo Switch Demo will be announced soon!

What does it take to be a hero?

Find out in this hand-crafted indie-action-adventure about friendship and the challenges of life!

Leif and his sidekick Ghost must combine their strength to overcome the evil of the Netherworld. Along the way, they’ll learn that friendship is the key strength in this story-driven, co-op action-adventure game.

Leif's Adventure: Netherworld Hero Friendship Trailer 2022

Features Gallery:

Tap on each section to learn more!

Hover over each section to learn more!

Leif’s Adventure combines deep action-adventure mechansim with a unique two-character system. Use the abilities of Ghost and Leif and work as a team to overcome all obstacles. Equip your character with weapons, potions and armour, talk to the inhabitants of this magical world and help them to help you find a way back home.

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Leif's Adventure Gamescom Giveaway

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  • 1 x Nintendo Switch Pro Controller
  • 1 x Handmade Leif's Adventure Plush Toy
  • 1 x Steam Gift Card
  • 5 x Leif's Adventure Custom Gym Bags
  • 1 x Leif's Adventure T-Shirt
  • 5 x Custom USB Flash Cards
OneManOnMars Newsletter
Sign-up for closed testing and news updates about the game

The Heads Behind Leif's Adventure:

Roman Fuhrer

OneManOnMars Founder and the Creative Mind behind Leif's Adventure

I’m glad you found your way here. Leif’s Adventure has been my heart’s project since I started planning it in 2016. Since then I’ve been working hard on the implementation of all ideas, be it game design, graphics, story, animations or all the managment duties that come allong of beeing an enterpreneur. I even learned how to program to make my dream of a game for the Nintendo Switch and Steam come true. I hope you enjoy playing Leif’s Adventure – why don’t you just try out the current demo? And although I started this project alone and did a lot of things on my own, nothing works without the right support. Some friends have helped me make Leif’s Adventure and I’m especially glad to have Jan and Patrick help me on this journey.

Jan Schaumlöffel

LTT Bird // Sound Design

Jan joined the project quite early on and helped defining the sonic vision of the game. His work includes asset creation, implementation via audio middleware FMOD and audio programming.

Annika Neumann

Unity Developer And Engineer

Annika is supporting Patricks coding department since last year and is working on implementing the latest and last features of Leif’s Adventure!

Patrick Henschel

Unity Developer and Engineer

Patrick joined a bit later but whenever code gets complicated he is the one to make Leif’s Adventure do what it should and keeps the code proficient and fast.

Shop Yourself Some Fantastic Merch!

Whether you fancy a new t-shirt, a hoddie or a mug for your morning coffee. I have it all for you. Choose your design and apply it to the merchandise you like best. You’ll be supporting the development of Leif’s Adventure! Thank you very much!