Everest vs UE4SS

Everest8.6Visit UE4SS8.4Visit

Higher score Everest #5 in Game Mod Loaders 8.6/10 Free plan Free plan✓ 2 of 4 features Visit Everest

vs

UE4SS #6 in Game Mod Loaders 8.4/10 Open source ✓ 1 of 4 features Visit UE4SS

• Everest fits best

  Celeste players and mod creators

• UE4SS fits best

  Unreal Engine game modding

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Everest 8.6/10 Visit ↗	UE4SS 8.4/10 Visit ↗
At a glance
Editor score	8.6	8.4
Ranking	#5 in Game Mod Loaders	#6 in Game Mod Loaders
Best for	Celeste players and mod creators	Unreal Engine game modding
Pricing model	Free	Free
Starting price	Free plan	Open source
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Desktop	Desktop
Platforms	Windows, macOS, Linux	Windows
Support	Community, Docs	Community, Docs
Built for	Solo, Small business	Solo, Small business, Mid-market, Enterprise
Features Everest 2/4 · UE4SS 1/4
Plugin support	✓ (best)	Not checked yet
Load-order control	Not checked yet	✓ (best)
Mod profiles	Not checked yet	Not checked yet
Dependency handling	✓ (best)	Not checked yet
Specs
Supported games	Celeste	Not checked yet
Supported platforms	Windows, macOS, Linux	Windows
Mod loading method	Injection	Injection
Our review
Pros	Supports custom maps, campaigns, graphics, audio, dialogue, and code mods Works with Celeste on Windows, macOS, and Linux Includes dependency downloads, updating, debugging, and vanilla switching	Lua and C++ APIs support script-based and native mods Blueprint loading, actor spawning, and live property editing Automatic or manual injection with configurable mod ordering
Cons	Focused on Celeste rather than multiple games Uses a separate Olympus installer for cross-platform installation Does not provide AI features	Windows is the published supported platform Injection requires installation alongside a game executable The broad Unreal Engine scope may require game-specific compatibility checks
Our verdict	Everest is an open-source mod loader and modding API for Celeste. It is aimed at players who want custom maps, campaigns, graphics, audio, dialogue, and code mods, as well as creators who need tools for developing and debugging mods.… Read the review →	UE4SS is an open-source modding system for Unreal Engine 4 and 5 games, aimed at players and developers who want to load, create, or debug mods on Windows. It injects into supported game processes and combines Lua scripting with a C++… Read the review →

Strengths and trade-offs

• Everest — where it wins

  • Supports custom maps, campaigns, graphics, audio, dialogue, and code mods
  • Works with Celeste on Windows, macOS, and Linux
  • Includes dependency downloads, updating, debugging, and vanilla switching

  Where it doesn't

  • Focused on Celeste rather than multiple games
  • Uses a separate Olympus installer for cross-platform installation
  • Does not provide AI features

• UE4SS — where it wins

  • Lua and C++ APIs support script-based and native mods
  • Blueprint loading, actor spawning, and live property editing
  • Automatic or manual injection with configurable mod ordering

  Where it doesn't

  • Windows is the published supported platform
  • Injection requires installation alongside a game executable
  • The broad Unreal Engine scope may require game-specific compatibility checks

• Everest8.6/10 · Free plan

  A free, open-source Celeste mod loader with broad content support and developer tools.

  Visit EverestFull verdict →
• UE4SS8.4/10 · Open source

  A deep Unreal Engine mod loader for Windows modders and developers.

  Visit UE4SSFull verdict →