Deficiency's FNF Engine
A Roblox experience owned by Deficient Games.
Music & rhythmENFriday Night Funkin'Music RhythmEngine/Tool
Description (written by the developer; not a statement by this register)
i made a small fnf engine rebuilt in roblox lua updates: updated hit detection system to be closer to Psych Engine added visualizer added loading screen added song timer bar added real keybind support (still testing) credits: i made and charted marbled regrets Complexitify for 50% of the structuring rob'd originally made by SmilyYeahhh, remix by CasualSpiritt, charting by PupEm_Up make sure to have a computer for better expirience
Last updated by the developer 15 Jan 2025, 04:39 UTC.
Live players over time
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 25 Aug 2026, 22:17 | 0 | first reading |
Concurrent players at each of our measurements (insert-on-change).