Hollow Knight

Hollow Knight (PC, 2017) has code that decompiles almost back to source, hk-modding/api, and 3 other public projects, including a source port. An agent environment already wraps it.

Data checked 2026-10-12 · unbaked registry

Unity

Projects

Hollow Knight Modding API (hk-modding/api; Assembly-CSharp patch)

Readable bytecodeUnity (Mono) C#; Assembly-CSharp.dll decompilable; MonoMod340 starspushed 2026-06-20MIT licenserelease 1.5.78.11833-77

Hollow Knight Modding API

GitHub

HollowKnight_RL (DQN boss-fight agent)

Agent environmentPython 3.10, Windows; needs Satchel + EnemyHPBar mods120 starspushed 2023-08-14no license

Playing Hollow Knight with reinforcement learning.

GitHub

HK: Dual Souls

Source port33 starspushed 2026-08-23custom licenserelease 1.0.3

dropped from awesome-decomp-games: quiver-only, <; latest release 1.0.3, 2026-08-23; Quiver type: PC port; status beta

hollow-knight-mcp

Agent environmentMCP server0 starspushed 2025-10-18no license

MCP server dedicado a hollow knight

GitHub

What you need

You need your own copy of the game: these projects ship code only.

Agent environments

Same toolchain

GameMethodYearStarsLast push

PCHearthstoneReimplementationReadable bytecode20144.9k2026-10-10 PCStardew ValleyDecompNative port+220162.8k2026-09-28 MOBAmong UsReimplementationNative port+220182.4k2026-10-09 PS1Final Fantasy IXMatching decompStatic recomp+220007082026-10-12 PCKerbal Space ProgramReadable bytecodeAgent environment20157482026-10-12 PCHollow Knight: SilksongStatic recompSource port+22025792026-09-25 MOBBloons TD 6Readable bytecodeAgent environment+120182632026-10-07 PCPathfinder: Wrath of the RighteousReadable bytecode20215482026-10-10

More on PC

GameMethodYearStarsLast push

PCMindustrySource releaseAgent environment201929k2026-10-11 PCosu!Source releaseReadable bytecode+1200719k2026-10-12 PCCommand & Conquer Remastered CollectionSource release202021k2025-01-16 PCRollerCoaster Tycoon 2ReimplementationAgent environment200216k2026-10-12 PCDune 2000Reimplementation199818k2026-10-11 PCAge of Empires IIReimplementation199914k2026-10-03 PCCataclysm: Dark Days AheadSource release201313k2026-10-12 PCCivilization VSource releaseReimplementation201011k2026-10-12

Found via Clazex/HollowKnight.GodSeekerPlus, Extremelyd1/HKMP, store.steampowered.com/app/367520/, cs224r.stanford.edu/projects/pdfs/CS224R_Project, theses.liacs.nl/pdf/2022-2023-LeeJ.pdf

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.