MegaFix
If you have been playing Pixelmon and noticed that Mega Bosses and Wormholes simply refuse to appear, you are not alone. A bug in Pixelmon 9.1.5 broke both of these spawn systems, leaving players without some of the most exciting content the mod has to offer. MegaFix is a lightweight sidemod built specifically to solve that problem, restoring Mega Boss encounters and Wormhole spawning so your world feels alive again.
What MegaFix Actually Does
MegaFix is a sidemod for Pixelmon 9.1.5 that patches the spawning logic for Mega Bosses and Wormholes. In the vanilla 9.1.5 release, these features are effectively dead due to a bug, meaning no Mega Bosses spawn and no Wormholes open. MegaFix steps in and re-enables both systems without requiring you to downgrade or wait for an official patch.
The mod is designed to be installed server-side only. If you run a multiplayer server, you only need MegaFix on the server, and every player connected will benefit from working spawns. For singleplayer worlds, you install it on your own client instead. This makes MegaFix for Minecraft extremely easy to deploy, whether you are managing a community server or just exploring on your own.
Supported Versions and Loader
MegaFix targets Pixelmon 9.1.5, which runs on Minecraft 1.16.5 through the Forge loader. Because it is a sidemod, it depends on Pixelmon being installed first. If you are running a different Pixelmon version, check compatibility before adding it, since the bug it fixes is specific to the 9.1.5 branch.
Configuring Spawn Behavior
One of the best parts of MegaFix is its config file, located at \config\megafix.toml. This file gives you fine control over how Mega Bosses and Wormholes behave in your world. You can adjust settings to match your server's difficulty and pacing rather than accepting default values.
- Toggle whether Mega Boss spawn chances scale based on differing Legendary and Boss spawn rates. This is enabled by default.
- Set Wormhole spawn frequency and overall spawn chance.
- Control the distance at which Wormholes appear from the player.
- Adjust the lifespan of a spawned Wormhole before it disappears.
- Individually disable Mega Boss fixes or Wormhole fixes if you only want one of the two systems active.
That last option is handy for server owners who want to phase in changes gradually. Disabling a fix simply stops that feature from spawning, so you can test one system at a time without editing multiple files.
How to Install MegaFix
Getting MegaFix running is straightforward. If you are wondering how to install it, the process mirrors most Forge sidemods. Place the MegaFix jar file into your mods folder alongside Pixelmon 9.1.5, then launch the game or restart your server. For multiplayer, remember the mod belongs on the server, not on each client. Singleplayer players should drop it into their own mods directory.
If you would rather skip manual file management, the foxygame.net launcher offers a one-click install path that handles MegaFix and its dependencies automatically, so you never have to hunt down matching versions. The launcher also keeps an organized add-on catalog, which means MegaFix can be added alongside other Pixelmon sidemods without juggling folders or worrying about version mismatches.
After installation, load into your world and give the spawn systems a little time. Wormholes and Mega Bosses will not appear instantly, especially if you have tuned the config for rarity. Adjust the toml file and reload if you want faster results.
Why Server Owners Should Care
Mega Bosses and Wormholes are major draws for Pixelmon servers. They create goals, encourage exploration, and give players reasons to team up. Leaving them broken in 9.1.5 means losing a chunk of endgame content. MegaFix restores that content with minimal overhead and no client-side requirements for multiplayer setups, which keeps things simple for everyone involved.
Final Thoughts
MegaFix is a focused, practical solution for a very specific Pixelmon 9.1.5 bug. It brings back Mega Boss and Wormhole spawning, offers a flexible config, and installs in seconds on Forge for Minecraft 1.16.5. Whether you run a busy server or a private singleplayer world, download MegaFix and let the epic encounters return.