Realistic Block Physics
A realistic overhaul of Minecraft's building mechanics.
About this Mod
Note: This mod requires Realistic Physics to be installed!
Description
Are you tired of the unrealistic building mechanics Minecraft has to offer? Perhaps you just want to wreak havoc and watch some buildings crumble? If so, this is probably the mod for you!
Realistic Block Physics is a realistic overhaul of Minecraft's building mechanics that will add a new sense of challenge and immersion into your worlds. Each block has been given its own unique physics definition that defines its mass, ability to support other blocks, fragility, and many other attributes. Exploring caves are also deemed more dangerous, as mining the wrong block could end up causing their ceilings to collapse!
Physics Engines
Multiple physics engines are also available, depending on whether you want a more realistic or casual experience.
- Realistic: The most realistic experience (obviously).
- Simple: A much more casual experience. Blocks will only fall if they are not connected to anything.
- Legacy: The old physics engine used in versions prior to 1.12.2-2.0.0.
Key Features
Logical Construction Required
Blocks and structures will fall if they are not correctly supported (depending on the physics engine).Mod Compatibility
Blocks from other mods are also supported (requires activation in the configuration file).Cave Strengthening Algorithm
A new cave strengthening algorithm has been developed to help prevent large caves from collapsing in on themselves. However, bear in mind that cave-ins and landslides are still possible.Performance
Performance has become a key priority to ensure this mod can function on a variety of systems, with configuration available.Lots of Customisation
Highly customisable configuration files are provided so that you can tweak just about anything.Override Vanilla Physics
This mod can also be used to alter or completely disable Vanilla falling block physics.Related Mods
For an even better experience, consider pairing this mod with the mods below that have also been developed by me.
Important Notes
- Please make a backup of any existing worlds you decide to use this mod on
- Please check the changelog for each release in case of changes that may affect your world
Available Versions
How to Install Realistic Block Physics on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.4).
Install Mod
Open the mod browser in the dashboard and search for "Realistic Block Physics". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.4, 1.20.3, 1.20.2 (+7 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Realistic Block Physics server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.4). You can switch loaders with one click in the panel.
Is Realistic Block Physics compatible with forge?
Realistic Block Physics officially supports forge for Minecraft 1.20.4, 1.20.3, 1.20.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Realistic Block Physics – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Realistic Block Physics consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install Realistic Block Physics with just one click on your server.