Mods / Libraries

• PPluginConfiguratorby EternalsTeamUsed to configure plugins easily in Ultrakill709.3k downloadsupdated 20 mo ago
• CConfiggyby HydraxousLibrary mod for configuring other mods!463.1k downloadsupdated 19 mo ago
• SSpawnerArmExtrasby BillyModUnlocks missing enemies, bosses and objects in the sandbox + adds many new custom ones. Lets you use special cheats, search for items in the spawner arm menu and more189.1k downloadsupdated 1 mo ago
• UUltraTweakerby Waff1eAn extensible ULTRAKILL mod which adds extra settings, and mutators.169.6k downloadsupdated 3 y ago
• UUltraModManagerby Temperz87Deprecated by its author: do not install this. A mod manager fo ULTRAKILL that adds a modding API and a way to unload some mods.166.8k downloadsupdated 3 y ago
• AAtlasLibby Waff1eA library used for Waffle's mods.126.3k downloadsupdated 22 mo ago
• NNotiffyby end_4Notification system for Ultrakill. This is a library and does nothing on its own.123.2k downloadsupdated 3 mo ago
• JJadeLibby Jade_HarleyProvides functions for my other mods.104.8k downloadsupdated 16 mo ago
• FFixPluginTypesSerializationby averyocean65Fixes custom Serializable structs and such stored in mod plugin assemblies not getting deserialized by the native Unity engine code.77.6k downloadsupdated 7 mo ago
• NNukeLibby end_4eNd_4's UltraKill Library73.8k downloadsupdated 1 mo ago
• UUltrakULLby UltrakULLDeprecated by its author: do not install this. A translation and localisation mod for ULTRAKILL.65.1k downloadsupdated 5 mo ago
• CCGMEDownloaderby FlazhikA library used by CybergrindMusicExplorer downloader. Does NOTHING by itself.61.5k downloadsupdated 8 mo ago
• HHydraDynamicsby HydraxousA Library for mods made by Hydraxous.55.5k downloadsupdated 4 y ago
• UULTRAKIT Reloadedby ULTRAKITA tool to ease creating and loading of custom content in ULTRAKILL.53.9k downloadsupdated 3 y ago
• UUKEnemyIdentifierby FlazhikA library used by CybergrindDeathcam for tracking which entity damaged the player48.6k downloadsupdated 20 mo ago
• CCrashLibsby CrashA small edit of Waffle's Atlas Library to add support for new weapon slots43.7k downloadsupdated 3 y ago
• NNyxLibby NyxpiriGeneral Library for/used by mods made by Nixya/nyxpirientity. Probably not of much interest to you unless you're installing one of those27.8k downloadsupdated 1 mo ago
• MMultiplayerUtilby DolfeModsDeprecated by its author: do not install this. THIS MOD DOES NOT ADD MULTIPLAYER. It adds useful utilities for multiplayer mods to use.27.0k downloadsupdated 12 mo ago
• UUltraAchievements Libraryby ProtractA Library to add Achievements to Ultrakill19.9k downloadsupdated 6 mo ago
• Aautotranslatorby ESP_TEAMThis is an advanced translator plugin that can be used to translate Unity-based games automatically and also provides the tools required to translate games manually.17.5k downloadsupdated 8 mo ago
• AAUUby averyocean65A small utility library for mods developed by averyocean6513.6k downloadsupdated 7 mo ago
• UULTRAPORTALby TemporaryA library for easily creating portals in mods.10.3k downloadsupdated 7 mo ago
• UUltraPowerUpsby CultOfJakitoA library which adds custom power up functionality.9.2k downloadsupdated 3 y ago
• NNicerSceneNamesby tetriscat66This is a utility mod for mod developers. It does not add any features for players on its own. See the README for more details.8.0k downloadsupdated 18 mo ago
• UUKSQLiteby AtomSmasherShared SQLite runtime libraries for ULTRAKILL BepInEx mods. For truly exceptional data storage.7.1k downloadsupdated 6 mo ago
• HHookGenPatcherby UltrakillModdingMMHOOK generation at runtime.6.6k downloadsupdated 4 y ago
• EEnvyAndSpiteVanitizedby ImNotSimonDeprecated by its author: do not install this. A public ULTRAKILL level editor & loader5.6k downloadsupdated 2 y ago
• CCheatsAPIby Eepy_Nico_StuffLibrary for adding cheats to the sandbox menu.4.8k downloadsupdated 4 mo ago
• MMenuCleanerby ZephyrOffCleans up the mess in the menus left by having multiple mods installed.3.8k downloadsupdated 1 mo ago
• GGOOPYlibby ZephyrOffShared code for my mods, useless on its own.2.6k downloadsupdated 3 mo ago
• UUniversal Save Systemby ULTRAKITPersistent data storage backend for ULTRAKILL mods.1.7k downloadsupdated 2 y ago
• UUltraFrenchby Th9626Traduction française avec textures et dialogues : Mise à jour avec Fraude Mise à jour le 28/08/2026 French translation of Ultrakill : Fraud update.1.6k downloadsupdated 1 mo ago

32 libraries mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.