v3.6.0 New: agents that see moving obstacles coming
Drones, birds, fish and starfighters that fly through the whole volume of your level — over, under and between everything — in open worlds without edges. A sparse voxel octree of the empty air, 85 Behaviour Tree, StateTree and Mass nodes, and crowds of 10,000+ agents, from the developer who built it.
A free update for every licence. Read the full release notes →
It learns a gate's or a piston's cycle, turns a spinning blade with it, waits for a gap or takes a detour, and dodges what it cannot outrun. The new Obstacle Gauntlet demo throws 42 movers at twelve drones — or a crowd of 200 — down a 370 m hall. Moving obstacle avoidance →
Each machine's GPU proves its voxels before it builds navigation, and the GPU build repairs its own output on D3D12, D3D11 and Vulkan.
They hold their depth, swim upright, school side by side and in layers, and beat their tails with their speed.
Every world in Behaviour Tree and StateTree editions, most in a Mass Entity crowd edition too — a free download from inside the editor. All seventeen worlds →
A courier drone lands on a moving, rolling ship and a moving lorry, flying each approach relative to the deck.
6-DOF seagulls that cannot hover glide in to perch on free ledges, ride an updraft and scatter.
A gunner drone hunts a runner through the streets and fires only on a clean shot.
An ROV surveys the reef while the school hides in the coral out of its sight.
Fighters chase raiders through a streamed asteroid belt, re-planning as the target breaks.
Flying, swimming and free-floating AI — from one hero drone to a 10,000-agent swarm.
The 3D pathfinding & volumetric navigation plugin for Unreal Engine 5
LCM 3D Navigation AI brings true 3D pathfinding to Unreal Engine 5 — flying AI pathfinding for drones, dragons, spaceships, helicopters and underwater agents that Recast navmesh simply cannot express. Unreal's Recast navmesh answers one question: where can I stand? It flattens your level into walkable polygons — exactly right for a soldier, completely wrong for a dragon. LCM 3D Navigation AI answers a different one: where is there empty air? It carves the whole playable volume into a Sparse Voxel Octree and paths through the empty nodes, so open sky costs almost nothing and detail appears only where geometry actually is.
LcmNavigationManagerSVO per level and it owns the octree, the pathfinder and every query.Fly To Location Blueprint node flies any pawn with no AI Controller, and Unreal's own Move To and EQS plan through the octree.LcmFlightMovementComponent turns it into a body. Multirotor drone, Jet / Fixed-Wing, Bird (flap-glide) and Fish (undulatory) archetypes with thrust, lift, drag, buoyancy and attitude PID. Fish hold depth, school in layers and beat their tails with their speed; flight follows the level's gravity.Client_DeliverPath; moving obstacles replay their nav footprint to every peer over a multicast. A headless validation suite (-LcmMpTest) exercises the sanity, replicated-request, multicast-transport and digest-chain paths, and CPU compute stays bit-deterministic for replays and lockstep.
Whichever way your team authors behaviour, LCM 3D Navigation AI plugs into it — the same navigation data, three authoring surfaces.
21 tasks, 5 decorators and 5 services — FlyTo, Patrol, Land, Perch, Engage Target, Find Cover, Flee, Investigate, line-of-sight and chunk-loaded checks — alongside seven documented stock-node patterns showing where an LCM node earns its place.
25 tasks, 8 conditions and 8 evaluators at full parity with the Behaviour Tree nodes, so state-driven agents get identical routing and behaviours without a Behaviour Tree in the stack.
Eight ECS traits — per-agent pathfinding or a shared flow field — plus 10 Mass StateTree tasks and 3 evaluators, so a crowd of 10,000+ entities can perch, scan, engage, investigate and flee.
Supported on desktop, mobile and current-gen consoles — Windows, macOS, Linux, Android, iOS, PlayStation 5 and Xbox Series X|S — with the C++ core built to the same standard on every target. Consoles compile from source with your own platform SDK.
A per-agent GPU path solver and GPU flow field — currently in experimental validation through our research programme — plus further profiling to widen frame-budget headroom at crowd scale.
A wider server-authoritative surface and lower-bandwidth path and obstacle sync for larger multiplayer sessions.
A 165-page manual, 15 step-by-step tutorials and a 13-page Quick Start, free to read online — every setting is listed with its verified default and limits, and all 726 Blueprint-exposed symbols are in a full API reference.
Best 3D Navigation Plugin on the Marketplace
Weapon beams, explosions, shields and environmental effects — 19 Niagara VFX packs on Fab, 4.5★ across 47 ratings. See every pack →
UEDEV is the Unreal engineering label of L. Charitha Madhushanka — a senior gameplay engineer shipping commercial games, VR/AR, high-performance C++ plugins and engine tools. For studio work, contract jobs, or a bespoke plugin or system, head to the full developer portfolio.
LCM 3D Navigation AI — true 3D navigation and pathfinding for Unreal Engine 5, built and supported by a working game developer.
