SolarFren
Slopforge
Directory of revivals, ports, engines and tools; every card links upstream, no game files hosted.
GAME HUB
Hub
9 GameModMashups links tagged Hub.
SolarFren
Game Decomp Library
Sister site for game decompilation projects, with method tags and evidence.
Melty
Melty
YC-backed one-click launcher for mashups like SkyCraft and Elden Craft, with multiplayer invites; free for Windows.
gwendall
Multitap
gwendall's engine that reconstructs classic games and re-renders them in new ways, like spatial play on Quest 3. Early access is open.
MotionViz
PRMdues
A searchable, links-only directory of ~4,600 fan ports, remakes, mods, ROM hacks and game-in-a-game mashups, sorted into 18 shelves.
bailo167
Awesome Game Mashups
A big curated catalogue of games rebuilt inside other games: cross-game mechanics, engine mashups, playable ports and viral projects, updated weekly with an Atom feed.
andrewnakas
AI Game Mashups
Play clean-room AI game mashups in your browser, plus a history of AI game mashups.
SIGFAI
SIGF
A Windows launcher that installs game mashups in one click and puts every game back with Restore vanilla.
aaronateataco
Mashwright
Open-source launcher for game mashups and mods that finds your games, installs mods safely and restores vanilla installs.