Mods / Bosses

• LLibraryOfRuinaby 76561199133620710Library of Ruina Mod for Slay the Spire 2 This mod brings the world of Library of Ruina into Slay the Spire 2. This mod adds a complete collection of content from Library of Ruina, including: Monsters and special encounters Relics and Abnormality Pages Special events E.G.O cards Additional intera...27.9k downloadsupdated 2 mo ago
• 黑黑夜君临扩展mod ELDEN RING NIGHTREIGN MODby 76561198799618526新增了一名可玩角色：黑夜君临的追踪者，包含标准86张角色卡牌，7个角色遗物和3种角色药水。同时新增了一个测试boss，平衡律法的魔物，控制台输入fight WYLDER-LIPULA进入战斗。11.7k downloadsupdated 4 mo ago
• IIsaacMod(Beta branch)by 76561198808881876Currently still in development. Added 70+ relics from The Binding of Isaac Minion and set mechanics (currently only Guppy! and Bookworm) Soul Heart mechanic Devil / Angel Room mechanic Planetarium event Act 1 Boss Act 2 Boss Multiplayer compatibility Future update plans: More relics6.5k downloadsupdated 2 mo ago
• [[EN/CN/JP]Arknights Mizuki 水月与深蓝之树by 76561198980263731Notice This Mod has transfered from baselib to ritsulib. Please subscribe sts2-ritsulib to continue playing!!! This Mod has transfered from baselib to ritsulib. Please subscribe sts2-ritsulib to continue playing!!! This Mod has transfered from baselib to ritsulib. Please subscribe sts2-ritsulib t...4.2k downloadsupdated 13 d ago
• AArknights: End of Terraby 76561198341345999An Arknights crossover mod for Slay the Spire 2. Adds new cards, relics, encounters, and story events inspired by the world of Terra. Hidden deep within the journey lies the Gate of the End, a secret event that only appears when specific conditions are met. Beyond it awaits unique mechanics, a co...1.5k downloadsupdated 1 mo ago

5 bosses 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.