Uploaded June 2026 | Updated September 2026, 2 weeks ago
I built a custom gravity system for Unreal Engine 5 — and the hard part isn't the math. It's making it work in multiplayer.
GravityCore is a plugin that adds shape-based custom gravity to UE5: Sphere volumes for planets (walk all the way around), Cylinder volumes for ring worlds (walk the inside, Halo-style), and Box volumes for directional / flip-gravity zones. One component, one Shape dropdown, three completely different gravity behaviors. Plus an Invert toggle to flip any of them, and priority-based override zones for nesting different gravity regions.
The multiplayer correctness is the engineering. Most planet gravity solutions break the moment two players join the same level — proxies tilt, jitter, animation flickers between walk and fall. GravityCore computes gravity deterministically from position on every machine, so simulated proxies align to the surface and move smoothly. No overlap events, no replicated-rotation reliance, no false "falling."
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🌍 GET GRAVITYCORE
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🏙️ Get GravityCore on Fab: fab.com/listings/c74de757-8cf8-45ff-9d6e-82d3b421af5b
🎮 Free Playable Demo (Patreon): patreon.com/CodeLikeMe/posts/gravitycore-demo-161878705
📁 Project Files ($20+ Patreon): patreon.com/CodeLikeMe/posts/161878714
🌍 Companion plugin — PlanetGen: fab.com/listings/96c36654-f244-4c75-a527-cfaaab2d5ac4
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🛠️ WHAT'S IN THE PLUGIN
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✔ Three shape types: Sphere (planet gravity), Cylinder (ring world gravity), Box (directional gravity)
✔ Invert toggle on every source
✔ Priority-based override zones (nest a small flip-gravity room inside a planet)
✔ Multiplayer-replicated, proxy-correct
✔ Custom UCharacterMovementComponent driving UE5's variable gravity
✔ Independent gravity-aligned orbit camera (360° look)
✔ Editor + runtime debug visualization
✔ Full C++ source + Blueprint API
✔ UE 5.4 / 5.5 / 5.6 / 5.7 / 5.8 supported
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🌐 USE CASES
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✔ Space games and planetary exploration
✔ Ring world / megastructure settings (Halo, O'Neill cylinders, generation ships)
✔ Sci-fi platformers
✔ Gravity-flip puzzle games
✔ Multiplayer games needing custom gravity that actually replicates
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🎮 SUPPORT & COMMUNITY
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► Patreon: patreon.com/cw/CodeLikeMe
► Subscribe: youtube.com/codelikeme
#UnrealEngine #UE5 #GameDev #CustomGravity #PlanetGravity #RingWorld
#SpaceSim #UE5Plugin #IndieDev #UE5Tutorial #MultiplayerGameDev #CharacterMovement
I built a custom gravity system for Unreal Engine 5 — and the hard part isn't the math. It's making it work in multiplayer.
GravityCore is a plugin that adds shape-based custom gravity to UE5: Sphere volumes for planets (walk all the way around), Cylinder volumes for ring worlds (walk the inside, Halo-style), and Box volumes for directional / flip-gravity zones. One component, one Shape dropdown, three completely different gravity behaviors. Plus an Invert toggle to flip any of them, and priority-based override zones for nesting different gravity regions.
The multiplayer correctness is the engineering. Most planet gravity solutions break the moment two players join the same level — proxies tilt, jitter, animation flickers between walk and fall. GravityCore computes gravity deterministically from position on every machine, so simulated proxies align to the surface and move smoothly. No overlap events, no replicated-rotation reliance, no false "falling."
────────────────────────────────────────
🌍 GET GRAVITYCORE
────────────────────────────────────────
🏙️ Get GravityCore on Fab: fab.com/listings/c74de757-8cf8-45ff-9d6e-82d3b421af5b
🎮 Free Playable Demo (Patreon): patreon.com/CodeLikeMe/posts/gravitycore-demo-161878705
📁 Project Files ($20+ Patreon): patreon.com/CodeLikeMe/posts/161878714
🌍 Companion plugin — PlanetGen: fab.com/listings/96c36654-f244-4c75-a527-cfaaab2d5ac4
────────────────────────────────────────
🛠️ WHAT'S IN THE PLUGIN
────────────────────────────────────────
✔ Three shape types: Sphere (planet gravity), Cylinder (ring world gravity), Box (directional gravity)
✔ Invert toggle on every source
✔ Priority-based override zones (nest a small flip-gravity room inside a planet)
✔ Multiplayer-replicated, proxy-correct
✔ Custom UCharacterMovementComponent driving UE5's variable gravity
✔ Independent gravity-aligned orbit camera (360° look)
✔ Editor + runtime debug visualization
✔ Full C++ source + Blueprint API
✔ UE 5.4 / 5.5 / 5.6 / 5.7 / 5.8 supported
────────────────────────────────────────
🌐 USE CASES
────────────────────────────────────────
✔ Space games and planetary exploration
✔ Ring world / megastructure settings (Halo, O'Neill cylinders, generation ships)
✔ Sci-fi platformers
✔ Gravity-flip puzzle games
✔ Multiplayer games needing custom gravity that actually replicates
────────────────────────────────────────
🎮 SUPPORT & COMMUNITY
────────────────────────────────────────
► Patreon: patreon.com/cw/CodeLikeMe
► Subscribe: youtube.com/codelikeme
#UnrealEngine #UE5 #GameDev #CustomGravity #PlanetGravity #RingWorld
#SpaceSim #UE5Plugin #IndieDev #UE5Tutorial #MultiplayerGameDev #CharacterMovement
