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Watch trailer on Steam ↗Mech Builder 3D
Don Pachi · Published by Don Pachi
Very Positive — 94% positive (90 reviews) · 17 achievements
Last updated 8 Oct 2026
Become a master modeler in Mech Builder 3D. Experience the relaxing process of assembling, customizing, posing and displaying all the 61 model kits with complete freedom without ever losing a piece.
£7.19
£11.99Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
Price history
Indie, Casual · 2026 · More £5 - £15 games
Explore the serene art of mech construction in Mech Builder 3D. Craft and display your creations with complete freedom among 61 meticulously designed kits, all brought to life by indie developer Don Pachi.
About this game
Welcome to Mech Builder 3D — your perfect escape into the Gunpla-inspired world of model building. Experience the relaxing process of building a model kit with complete freedom.
Effortlessly assemble, paint, and pose all your models. Build mechs, monsters, armors, and so much more.
Building all the kits will take around 7-9 hours of your time.
All 3D models and pieces have been carefully crafted for a relaxing experience.
Features
61 model kits to build.
A pressure-free experience: build your way, at your own pace.
Pose the models kits in any position you want.
Unlock kitbash mode to make your own models with all the pieces.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10, Windows 11
- Processor: Dual Core 2.66GHz (64 bit)
- Memory: 8 GB RAM
- Graphics: Radeon HD 7770, GeForce GTX 460 or better
- DirectX: Version 11
- Storage: 5 GB available space
- Sound Card: Windows Compatible Sound Card
- Additional Notes: Requirements may change as development furthers
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 10, Windows 11
- Processor: Intel Core i5 4570
- Memory: 10 GB RAM
- Graphics: Radeon HD 7770, GeForce GTX 460 or better
- DirectX: Version 11
- Storage: 5 GB available space
- Sound Card: Windows Compatible Sound Card
- Additional Notes: Requirements may change as development furthers
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
Mech Builder 3D + DLC 40% off
Now is your chance to get Mech Builder 3D and the DLC with 40% off.Read full article on Community Announcements (Don Pachi)AnnouncementsOfficial
Click Build Repeat: Officially released!!
Click Build Repeat is an incremental game about building and collecting model kits. Get it with 20% off right now:Read full article on Community Announcements (Don Pachi)AnnouncementsOfficial
Click Build Repeat: New incremental gunpla game
Click Build Repeat is an incremental game about building and collecting model kits. It's a game I've been developing and it will be released in July, you can try the demo and add it to your wishlist:Read full article on Community Announcements (Don Pachi)Community & EventsOfficial
Loading screens contest winners
Here are the pictures of the winners, whose images will appear on the loading screens in today's patch along with their usernames (One will randomly appear on the loading screens). Winners:Abel2004CryomancerLordDeathDragomMadCookie4Solarpiggeh Thank you so much to everyone who participated.Read full article on Community Announcements (Don Pachi)Patch NotesOfficial
Patch 1.4.6i
Fixed:Sometimes, in the main menu, the models are displayed with weapons of multiple save slots.Read full article on Community Announcements (Don Pachi)
