Roblox’s Character Controller Library (CCL) is a major change in how creators build character movement. Instead of relying entirely on the traditional Humanoid state machine, CCL uses a modular, Luau-driven ability system built around the ControllerManager. That makes movement behavior easier to configure, inspect, and extend.
There are two milestones worth separating: Roblox announced the CCL full release for live experiences on April 8, 2026, then introduced a Studio Beta expansion on September 10, 2026 with Sprint, Crouch, improved legacy Shift-Lock behavior, and the first version of the Custom Abilities API. The September announcement was a beta expansion—not a claim that every new ability and API feature had already reached a universal full release.
What the Character Controller Library changes
CCL moves character behavior toward a collection of smaller abilities rather than one rigid set of engine-defined character states. Abilities can respond to player input, environmental sensors, and labels broadcast by other abilities. Creators can configure when an ability starts, how long it runs, and how it interacts with other abilities.
The library is built around AvatarAbilities and ControllerManager. Roblox describes this as a more transparent and extensible Luau implementation of character movement, while retaining the option to keep existing experiences on the legacy Humanoid system.
Full release: what creators can use
In its April 8, 2026 full-release announcement, Roblox said the Character Controller Library was available for live experiences. Creators can opt in through Studio’s Avatar Settings under the Movement section. Roblox also said existing experiences would not be changed automatically and that it did not intend to deprecate existing APIs.
The Classic Obby template was the first template to have CCL enabled by default, with a broader template rollout planned over time. For a new project, starting with CCL can reduce the need to rebuild movement logic later. For an existing project, test the change in a copy before enabling it in a live experience.
New default abilities: Sprint and Crouch
The September 10 Studio Beta expansion added Sprint and Crouch to the CCL direction, alongside improvements to legacy Shift-Lock. These abilities give creators a starting point for common movement mechanics without requiring every game to implement them from scratch.
Creators should still test the experience on keyboard and mouse, gamepad, and touch. Input behavior and on-screen controls can affect how a movement mechanic feels across devices. Check custom mobile UI for overlap with Roblox’s default controls, and verify that sprinting or crouching does not conflict with the game’s own movement, combat, or camera systems.
How the Custom Abilities API works
The initial Custom Abilities API provides a lifecycle for each ability. A module can use OnSetup to initialize, OnStart when it activates, OnUpdate for per-frame behavior, OnStop when it deactivates, and OnTeardown when it is removed.
Creators can register and unregister abilities at runtime with AddAbility and RemoveAbility. Activation rules can be composed with StartsWhen, RunsWhile, Blocks, and Stops, using helpers such as All, Any, and Not. Configuration values can be exposed through Config.
Input modes include Press, Hold, Toggle, and Repeat-style behavior. This lets a creator decide whether an ability triggers once, remains active while a button is held, toggles on and off, or repeats while held. Roblox’s documentation also explains action slots and their default keyboard, gamepad, and touch bindings.
Important networking and compatibility notes
Roblox’s September beta announcement said the first Custom Abilities API release targets Server Authority. Roblox recommended enabling Server Authority for new projects using the API, noting that Automatic authority had worked in internal testing but was not guaranteed to behave correctly in every experience.
The same announcement warned that CCL compatibility with Tools, Inventory/Backpack, and Health was not yet recommended at that time. Treat this as an important integration checkpoint: test equipment, inventory interactions, health and damage flows, respawning, and multiplayer synchronization before shipping. Check the latest Creator Hub documentation and release notes because beta guidance can change.
How to enable CCL in Roblox Studio
- Save or publish your experience so Avatar Settings is available.
- Open Studio’s Avatar Settings and select the Movement section.
- Choose Character Controller Library and review the listed abilities.
- Enable or disable the abilities that fit your game design.
- Test movement, camera behavior, UI, tools, health, and multiplayer on every supported input type.
Roblox’s documentation notes that Running should generally remain enabled because disabling it prevents characters from moving along the ground. It also advises keeping Getting Up enabled when Falling Down is enabled, so characters can recover after falling.
Should your game switch to CCL?
CCL is worth evaluating if you are building a new experience or want more control over movement mechanics. Its modular structure can make custom movement systems easier to organize and maintain. However, a migration is not simply a toggle: existing scripts may depend on Humanoid states, tool behavior, health systems, or assumptions about input.
For an existing game, create a test branch, enable CCL there, and compare the full player loop before changing the live experience. Test edge cases such as jumping while sprinting, crouching near low ceilings, climbing, swimming, falling, respawning, and using tools. Multiplayer tests are especially important when custom abilities affect physics or rely on Server Authority.
Frequently asked questions
Is the Character Controller Library fully released?
Roblox announced the CCL full release for live experiences on April 8, 2026. The Sprint, Crouch, Shift-Lock improvements, and Custom Abilities API were announced as a Studio Beta expansion on September 10, 2026. Check current Creator Hub release notes for the latest availability of each feature.
Does enabling CCL automatically change an existing game?
No. Roblox said existing experiences would not be changed automatically. Creators can opt in through Avatar Settings.
Can creators build their own movement abilities?
Yes. The Custom Abilities API provides ability lifecycle callbacks, runtime registration and removal, activation rules, and configurable values. Review the current API documentation before implementing a production mechanic.
Should a new project use Server Authority?
Roblox recommended Server Authority for new projects using the initial Custom Abilities API release. Confirm the latest networking guidance before shipping.
Official Roblox resources
- Roblox: Character Controller Library full-release announcement
- Roblox: Studio Beta expansion and Custom Abilities API
- Roblox Creator Hub: Character Controller Library documentation
- Roblox Creator Updates
By Shivam Das
