Cities: Skylines

Cities: Skylines (PC, 2015) has code that decompiles almost back to source, boformer/CitiesHarmony, and 2 other public projects. An agent environment already wraps it.

Data checked 2026-10-12 · unbaked registry

Unity

Projects

Cities: Skylines modding (Unity Mono; official C# mod API + Harmony)

Readable bytecodeUnity (Mono) C#; official ICities API; Harmony85 starspushed 2023-01-14MIT licenserelease v2.2.2-0

Harmony 2.x assembly provider mod for Cities: Skylines

GitHub

cities-skylines-mcp (MCP server + in-game bridge)

Agent environmentC# mod bridge + MCP3 starspushed 2026-06-14MIT license

MCP Server and Bridge for Cities Skylines

GitHub

Cradle (General Computer Control)covers 4 games

Agent environmentScreenshots in, keyboard/mouse out; GPT-4o-class agent2,595 starspushed 2024-11-07MIT license

The Cradle framework is a first attempt at General Computer Control (GCC). Cradle supports agents to ace any computer task by enabling strong reasoning abilities, self-improvment, and skill curation…

ICML 2024 era; inactive since 2024-11

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 PCHollow KnightSource portReadable bytecode+120173402026-08-23 PCKerbal Space ProgramReadable bytecodeAgent environment20157482026-10-11 PCHollow Knight: SilksongStatic recompSource port+22025782026-09-25 MOBBloons TD 6Readable bytecodeAgent environment+120182632026-10-07

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 store.steampowered.com/app/255710/

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