Mods / API

• MModTheSpireby Bug KiooehtModTheSpire is the mod loader for Slay the Spire. You must subscribe to ModTheSpire if you want to play with mods. If you're interested in creating mods for Slay the Spire, check out the BaseMod wiki. If you'd like to contribute to the code behind ModTheSpire, visit the project's GItHub repository.3.2M downloadsupdated 4 y ago
• BBaseModby Bug KiooehtBaseMod is an open-source API for modding Slay the Spire. It provides an extra layer on top of ModTheSpire's low-level API to make the creation of mods easier. BaseMod provides such things as: A dev console Adding new characters Adding new cards Adding new relics Adding new potions Adding new eve...3.1M downloadsupdated 14 mo ago
• SStSLibby Bug KiooehtStSLib is an open-source group of generalized common keywords, mechanics, relic hooks, and power hooks for mod makers to use in order to avoid each mod maker needing to re-implement the same code over and over. If you're creating mods for Slay the Spire and want to know what StSLib can provide fo...2.7M downloadsupdated 14 mo ago
• SSteam Multiplayer - Together in Spireby DracoMultiplayer comes to Slay the Spire! What is Together in Spire? Together in Spire is a mod that allows you to play Slay the Spire with up to 10 friends! You can create lobbies using Steam (one click) or with Port Forwarding, with tons of customisable options. Once you're in a game, you can see ot...696.8k downloadsupdated 12 mo ago
• AAct Like Itby RazThis is a framework for the creation of custom acts. I hope that this motivates folks to get creative as it should get rid of a bulk of the "how the hell do I even start with this". Sourcecode as well as a how-to guide are available under (information is under "wiki"). Happy acting!536.2k downloadsupdated 3 y ago
• LLazy Man's Kitsby 76561198359706396Useless kits for lazy developers like me(mostly for me). Chinese document(unfinished) and source code on github: Be advised that the source code may not be updated If you come up with any bug, problem or issue, please leave a comment below to let me know.205.0k downloadsupdated 2 y ago
• SSTS Signature Libby 76561198851220127A simple library, allowing you to add cool Signature cards for your mode or the original game. You can switch from Signature or original appearance in single card view tab. ("Signature" comes from Hearthstone.) Shortly speaking, Signature cards are cards with no background, but a full-width card...175.5k downloadsupdated 9 mo ago
• TThe Animatorby EYBMod based on anime characters which currently contains 1 new Act, 1 new class, 170+ new cards (13 main anime series), 26 new relics, 15 new enemies, 6 new events. Discord server, for future updates, previews and general feedback. The mod is still in progress and I will add more cards, relics and...141.0k downloadsupdated 5 y ago
• GGifTheSpireLibby 76561198449560889A mod that allows for easy ingame creation of animations using sprite sheets. Wiki: Issues: If you want a proof of concept check out it's free real estate(not actually, don't sue me over this)(Yes that is what the mod is called).132.6k downloadsupdated 6 y ago
• AAnm2Playerby 76561198808881876Used to play .anm2 files from The Binding of Isaac. Source code & docs:94.1k downloadsupdated 2 y ago
• CChimera Cardsby Autumn MooncatOverview Chimera Cards aims to add extra flavour to runs by adding modifiers to cards that change how they work. Instead of seeing the same Cleave every time, you may instead find a Searing Cleave which can be upgraded any number of times, or perhaps a Bludgeoning Cleave which costs much more, bu...85.3k downloadsupdated 2 y ago
• SSTS Metricsby PaoPaoYueDue to full server storage, I plan to clear statistical data from before October 1, 2025, on December 22. Please note that there may be a brief service interruption during this period. ======================================== View the card pick statistics gathering from MILLIONS of cards drop amo...77.2k downloadsupdated 19 mo ago
• FFriendlyMinionsby KobtingApi for giving characters the ability to spawn their own Friendly Minions.74.0k downloadsupdated 8 y ago
• SSTS Service Frameworkby PaoPaoYue68.6k downloadsupdated 19 mo ago
• RReskin the Spireby 76561198808881876A reskin framework. There are documentation inside the jar package. Right by the jar package is the animation editor. Reskin art: GM_Whitose Source code & docs:49.2k downloadsupdated 6 mo ago
• BBundleCore - Trials of the Slayers Pt 2by SandTagFramework Extension used to facilitate crossover relics and mod config options. All bundles use this mod. You may use this mods features to make your own mods, but remember to include it as a dependency both in the MTS file and on steam. Supported mods include things like Downfall and Packmaster....46.2k downloadsupdated 15 mo ago
• EEUI: UI QoL Improvementsby Pine ColariaIntroduction EUI (formerly Compendium Filters) is a mod adding UI adjustments and resources that aim to make it easier and quicker for players to find information on cards, relics, and more. It currently adds the following: An in-game top panel button that opens a card pool screen with a grid of...39.4k downloadsupdated 5 mo ago
• TTree Hole Modby FimmlpSProvides a universal API for tree hole type MOD. The prototype of this MOD is the node Bosky Passage in Arknights: Integrated Strategies, which is used to expand the map in a combined hierarchical manner. Regarding compatibility: compatible with online mods; Compatible with most map extension mod...31.0k downloadsupdated 11 mo ago
• VVideoTheSpireby 76561198327552188The function of playing videos in the spire is implemented, and the code for video parsing all comes from gdx-video . Simple usage: AbstractDungeon.actionManager.addToBottom(new RunTopLevelEffectAction(new SimplePlayVideoEffect(videoFilePath))); Note that the video file format needs to be webm. G...29.5k downloadsupdated 3 y ago
• RRelicUpgradeLibby 䦹Support library for upgrading relics.21.9k downloadsupdated 4 y ago
• FFabricate: Custom Creation and Runsby Pine ColariaIntroduction NOTE: This mod requires EUI as it relies on its UI framework to run: Fabricate is a mod that allows players to create new cards, share them, and play with them in runs. It currently adds the following: A new main menu option called "Customize" allows you to access an editor for creat...13.4k downloadsupdated 4 mo ago
• SSTS Metrics Localby PaoPaoYueThis is the local version of STS Metrics ( A online card pick rate tracker). The online version can be found at: The main functionality of this version is consistent with the online version, The key difference is that it only uses the player's personal game history for statistics, while the onlin...11.1k downloadsupdated 22 mo ago
• DDownfall Char Boss APIby ChaofanThis API can help you add your character as a boss to Downfall. Detail page: Github page.8.9k downloadsupdated 5 y ago
• CCommunication Modby Forgotten ArbiterThis mod allows other processes or mods to control most aspects of the game. It does nothing by itself. For more information, see the github repository:5.5k downloadsupdated 5 y ago
• SShop Gridby 76561198892879563An API for interacting with the shop. Subscribe and list as a dependency in your own mod to start using it. My intention for this was to provide the community with a standardized way of adding items to the shop, mainly to prevent things like overlap. Includes the following: Adds an abstraction to...3.5k downloadsupdated 4 mo ago
• FFriendly Monstersby LysineA library for spawning configurable friendly monsters with animations and moves selection. This is a fork of the FriendlyMinions library with more features and bug fixes. A comprehensive guide on how to use the API is in the wiki: Most methods are also documented.3.3k downloadsupdated 4 y ago
• MMusicTipLibby Expendable DiverA Qol mod that can display the name of BGM currently playing in the lower left corner of the screen. It is also a support library. MusicTipLib.addMusicName() in receivePostInitialize can add new music tip for other mods3.3k downloadsupdated 6 y ago
• 多多人游戏增益共享-MP Shareby 76561199095453391当多人游戏中有玩家治疗或者获得格挡时，共享效果给其他同房间的玩家3.0k downloadsupdated 18 mo ago
• MMod Character Achievementsby 76561198327552188Add achievements for mod characters. By default, four achievements are added for each character: Ascend 0, Ascend 10, Ascend 20, and 'The End?'. Mods that have added achievements: ShoujoKageki The Hedgehog To add achievements to your own mod characters, please refer to:Github2.7k downloadsupdated 21 mo ago
• LLights Outby Autumn Mooncat⚠ PHOTOSENSITIVITY/EPILEPSY WARNING: This mod contains flashing lights and is not recommended for people with photosensitivity or epilepsy. Overview Have you ever felt like the spire is too flat? You're in a massive tower but apparently it's all lit up perfectly with no real variation. You use yo...2.5k downloadsupdated 3 y ago
• YyUiby cringeA UI creation framework and GUI For Developers. Click.2.5k downloadsupdated 7 y ago
• BBaseModExby ArqanteBaseModEx ("Ex" stands for "extension") is a collection of miscellaneous fixes and tweaks for BaseMod as well as an extension of its API. FEATURES: A set of new functions for other mods to use; Fixes and patches for BaseMod and the base game (mostly related to some minor UI issues). The full list...2.0k downloadsupdated 9 mo ago
• BBetter Synergiesby 76561198808881876A framework for creating and managing synergies in Slay The Spire. Source code & Docs:1.8k downloadsupdated 7 y ago
• BBeanShell for STSby 76561198808881876A java command devtool based on BeanShell.1.0k downloadsupdated 6 y ago
• DDice of Fateby FoxyEllieAccumulate and spend Dice to alter your card rewards! This mod is designed to be fully customizable (within its own limits) and every variable can be controlled by the player for their own tailored play experience. I set some default variables that make sense to me, but you can use whatever value...907 downloadsupdated 20 mo ago
• AAscension Managerby Fear of MondayAscension Manager is a framework meant to ease the creation of custom ascension/difficulties by removing the selection and rendering aspects in the main menu. This also makes it possible to download and use multiple mods simultaneously without conflict. More info and stuff on my github: For compa...832 downloadsupdated 4 y ago
• PPepper Loader - MODPACK sharing toolby SandTagA handy tool for sharing modpacks with your friends! No more spending a few hours changing configs! Pepper Loader can copy and load an entire modpack from scratch, simply download the mods from steam and load the packs included file. You can also make new packs by pressing the save button, all of...739 downloadsupdated 2 y ago
• SScriptTheSpireby 76561198984454884Giving players or modders the ability to write Lua scripts to modify the game Put Lua scripts under "mods/scripts" in the game root directory to apply effects. This mod supports hot-reload, any changes to the files will be applied without restarting the game. For example, you can write a script t...534 downloadsupdated 3 y ago
• CClickable Orbsby 76561198324041983This is a library for clickable orbs. This mod is still in early development, bug reports are appreciated! Github Link298 downloadsupdated 5 y ago
• SShammyLibby ShammyA core library of helpers I use in my own mods that I think others may find helpful. See GitHub Wiki for more information. To my knowledge, not used in any current mods, but if it does become used, I will update the description. Github:200 downloadsupdated 3 y ago
• DDefense Is The Best Offenseby pvsonneA mod that swaps the functionality of Damage and Block in Slay the Spire. Only currently has Ironclad cards altered.85 downloadsupdated 3 y ago

41 api 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.