For tutorials, see Importing custom decals into Tokyo Xtreme Racer (2025).
Last update: July 17, 2025
Fully dynamic time of day.
This Lua script enables a full day/night cycle in the Ultra Dynamic Sky UE5 plugin, used by the game.
Features
- Full 24-hour day/night cycle with realistic sunrise and sunset times reflecting the path of the sun in real-life Tokyo.
- Adjustable simulation speed, by default configured to 30x speed (1 real second = 30 in-game seconds).
- An option to synchronize the in-game time with the system clock.
- “Dusk-Night-Dawn” mode, where the simulation loops only through the night.
- Randomized clouds/fog each night.
- Persisted time of day and weather in Parking Areas. The time resets only once the player returns to the garage.
- An option to freeze time with Alt + F.
- Fully compatible with manual time/weather adjustments done by Car_Killer’s Time of Day/Weather Control script.
Credits
- Car_Killer - the original Time of Day/Weather Control script




Setup instructions
- Download UE4SS and extract the archive to
TokyoXtremeRacer/Binaries/Win64
in the game directory. You must use the UE4SS version from this page (or at least the config file), as it’s preconfigured for TXR2025. - Download Dynamic Day/Night Cycle and extract the archive to
TokyoXtremeRacer/Binaries/Win64/ue4ss/Mods
in the game directory. This directory was extracted from the UE4SS archive in the previous step. - To adjust the configuration options, open
TokyoXtremeRacer/Binaries/Win64/ue4ss/Mods/TXR_DayNightCycle\scripts\main.lua
with Notepad and reconfigure the variables at the very top of the script.