Release·Dec 4, 2025
Unity 6.3 LTS
The first LTS since 6.0, with a new Box2D v3 physics API.
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UnityUnity 6.3 LTS is the first Long-Term Support release since 6.0, giving studios a fresh two-year-supported target to lock production onto. It adds a new low-level 2D physics API based on Box2D v3, 2D and 3D rendering upgrades, and faster import, Play-mode, and build times.
UnityLTS
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Unity
Best for solo devs and small teams shipping cross-platform — especially 2D and mobile.