
End Flash Backport
End Flash Backport fork based on the original mod Copper Age Backport
Screenshots

About this Mod
Fork warning
This project is an extracted and modified component from a larger original mod, Copper Age Backport code credits to Smallinger.
The original code is used in accordance with the terms of the MIT license and has been adapted and extended with new functionality.
About
The End flash is a new atmospheric event in the End that, when activated, illuminates the End’s surface with a purple hue and generates a distant explosion sound. The End flash activates periodically within a 30 second interval, and it is not visible while the Ender Dragon’s battle fog is active.
Sound subtitles are included for English (US), German (DE), French (FR), Spanish (SP and MX), and Portuguese (BR) (same from 1.21.9)
It is not compatible with shaders or mods/resource packs that change the End skybox, (Enderscape, Better End etc) it will not cause a crash, but the End flash will not be rendered, or you can disable skyboxes in their respective configs.
If you want to edit the texture or sounds, use the "endflash" namespace.
Configuration ⚙️
This fork adds new configuration options for the end flash (still in beta):
endflash-client
endflash-common (server)
["End Flash"]
#Enable or disable the End Flash effect
enableEndFlash = true
#Size of the End Flash
# Default: 60.0
# Range: 1.0 ~ 500.0
flashScale = 60.0
#Height of the End Flash in the sky
# Default: 100.0
# Range: 0.0 ~ 500.0
flashHeight = 100.0
#Intensity multiplier of the flash
# Default: 1.0
# Range: 0.1 ~ 5.0
flashIntensity = 1.0
#Time between each End Flash
# Default: 600
# Range: 20 ~ 2400
flashIntervalTicks = 600
Available Versions
How to Install End Flash Backport on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "End Flash Backport". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
End Flash Backport server crashes on startup – what to do?
Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is End Flash Backport compatible with neoforge?
End Flash Backport officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with End Flash Backport – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if End Flash Backport consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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