Screenshots
Watch trailer on Steam ↗Ad Fundum
Oldbut Gold · Published by Oldbut Gold
Very Positive — 92% positive (541 reviews) · 26 achievements
Last updated 27 Sept 2026
Take control of a giant mech and dive into an exciting underground adventure in a dieselpunk world! Dig deep, collect valuable minerals, upgrade wisely, explore diverse locations, uncover ancient secrets, and try not to explode! Will you save the world or vanish in the depths below?
£5.89
Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
£5.89
Price history
4 Sept 2026Lowest: £5.89 · Highest: £5.896 Oct 2026
Adventure, Indie, RPG, Simulation, Casual · 2024 · More £5 - £15 games
Embark on an exciting underground journey as you control a colossal mech in Ad Fundum. Dig deep into the world of dieselpunk, collect minerals, and explore diverse locations with Oldbut Gold’s indie touch.
About this game
The Great War is over, and the Age of Diesel has come. While many believe this is an era of harmony and prosperity, you know that peace is more fragile than ever. You embark on a journey into the depths of Earth to find the means to avert future conflict. But what awaits you in the darkness below? Is it a boon or doom for humanity?
Take control of a colossal mech, capable of drilling through hundreds of meters of rock in a matter of seconds. Collect valuable resources, then fly back to your base to sell minerals for immense profit. Keep a close eye on your control panel: in a dangerous environment, your mech may overheat or overcool, and, most importantly, it doesn’t run on air – it needs fuel to operate. And beware of falling stones - your machine's hull won't withstand too much damage.
Take control of a colossal mech, capable of drilling through hundreds of meters of rock in a matter of seconds. Collect valuable resources, then fly back to your base to sell minerals for immense profit. Keep a close eye on your control panel: in a dangerous environment, your mech may overheat or overcool, and, most importantly, it doesn’t run on air – it needs fuel to operate. And beware of falling stones - your machine's hull won't withstand too much damage.
Rebuild your base
Your base has seen better days, but with enough amount of money you will restore it to its former glory and beyond to enhance your mining performance and unlock special abilities.Upgrade your gear
Upgrade every part of your mech individually to transform an outdated prototype into a technological marvel. Experiment with different builds to create the ultimate mining machine best suited for your playstyle.Find hidden secrets
Discover artifacts to unravel the history of the first human civilization on Earth, or search for the remnants of the previous underground expedition to unlock special upgrades with unique effects for your mech.Explore 8 diverse locations
The deeper you go, the more locations you will discover. Each has its own visual style, atmosphere, gameplay mechanics, and threats to deal with.Survive earthquakes
The ground you dig does not stand still – it shifts, changing its terrain. An earthquake is a dangerous time to collect resources, but when it’s raining minerals, how can you resist not grabbing some ore?Other features
- Procedurally generated map: each run will be unique!
- Original soundtrack: every location in the game has its own music and atmosphere.
- Several difficulty levels: whether you seek a challenge, want to relax, or aim for a balanced experience, you'll find a suitable difficulty. Or you can customize the difficulty to your own liking!
- Different story endings: can you unlock them all?
System Requirements
Will my PC run this? →Minimum
Minimum:
- Requires a 64-bit processor and operating system
- OS: Windows 10 or newer, 64-bit
- Processor: Intel Core i3-3225 or AMD A8-7650K
- Memory: 4 GB RAM
- Graphics: NVIDIA GeForce GT 740 or ATI Radeon HD 4890
- Storage: 500 MB available space
- Sound Card: Any
- Additional Notes: The game will most likely run on lower-rated hardware, but performance is not guaranteed.
Recommended
Recommended:
- Requires a 64-bit processor and operating system
Supported Languages
English, French, German, Portuguese - Brazil, Simplified Chinese, Russian, Spanish - Spain, Japanese, Turkish
Latest news
AnnouncementsOfficial
Ad Fundum is available now on Nintendo Switch!
Hey dieselminers! The wait is over — Ad Fundum is now available on Nintendo Switch! You can finally take the game with you wherever you go: on the couch, on the bus, or deep underground (for full immersion) :) Thanks for sticking with me through every delay and bump on the road. Grab your Switch, fire up the engines, and dive in! Ad Fundum on Nintendo StoreRead full article on Community Announcements (Denis)AnnouncementsOfficial
Ad Fundum is available now on consoles!
Hey dieselminers! The day has finally come — Ad Fundum is now live on PlayStation and Xbox!Grab your gear, fire up your engines, and dive into the mines wherever you play.Check it out on your favorite store and join the adventure: PlayStation Store Xbox Store Unfortunately, the Nintendo Switch release is taking a little longer than planned due to some technical hurdles. It’ll be ready to roll out on November 21 — thanks for your patience, Switch miners!Read full article on Community Announcements (Denis)AnnouncementsOfficial
Console release date moved to November 7th
Hey dieselminers! Seems like no game launch is complete without the classic delay tradition :) Ad Fundum is now coming to consoles on November 7, 2025 instead of October 31. We ran into a few last-minute hiccups with the PlayStation Store — nothing major, but it means we had to shift the date for all consoles to keep everything in sync. Thanks for rolling with me through every bump on the road — we’re almost there!Read full article on Community Announcements (Denis)AnnouncementsOfficial
Ad Fundum is coming to consoles on November 7th!
Hey dieselminers! I have some great news to share! It’s been more than a year since the release of Ad Fundum on PC, and today I’m happy to announce that Ad Fundum is finally coming to consoles on November 7th, 2025! Thanks to my partnership with Samustai, Ad Fundum will be available on: PlayStation 4 PlayStation 5 Xbox One Xbox X/S Nintendo Switch The console version includes all the latest updates and has been carefully optimized to ensure a smooth and immersive experience on every platform. (P.S. Unfortunately, we were not allowed to publish the store pages before release — but I’ll share all the links on launch day!) Thank you for sticking around and supporting this journey — it really means a lot. P.P.S. The original release date was moved from October 31st to November 7th, so I edited this post.Read full article on Community Announcements (Denis)Patch NotesOfficial
Security update - 1.2.2a
A new update is out to address a recently discovered security issue in the Unity engine. While this issue didn’t affect gameplay or cause any known harm, it could potentially allow unsafe file loading under certain conditions. I’ve updated the game to the fixed version of Unity to keep everything secure and running smoothly. You can read more about the issue on Unity’s official website here: https://unity.com/security/sept-2025-01If you’ve disabled automatic updates, please make sure to download this update manually to stay protected.Read full article on Community Announcements (Denis)
