yellow keycard flatpak repo

This is a repository holding some Flatpak builds I've assembled which I have yet to submit to Flathub for a variety of reasons - e.g. because the app is still going through developer changes and approval, the developers have gone missing or retired so I can't get approval for a submission, or the licensing situation is unclear or incompatible with Flathub, or the developers have specifically said they don't want their app to be listed on Flathub.

Setup

Run this command in a terminal window to set this repository up as a new remote for your Flatpak installation:

flatpak remote-add --user ykc https://flatpak.yellowkeycard.net/ykc.flatpakrepo

Once this is done, you can either click any of the Install buttons on this site to install the given application, or use the flatpak command line tool to search and install the applications as usual.

Current packages

App	Install	Submission status
Mega Man: Rock'n'Roll flatpak install com.dennisengelhard.megaman-rock-n-roll Mega Man fan game	Install	Unsuitable for Flathub distribution - unclear licensing.
Fade to Black flatpak install io.github.fpiesche.f2bgl A modern cross-platform port of Fade to Black	Install	Unsuitable for Flathub: developer retired and license unclear.
Arx Libertatis flatpak install org.arx_libertatis.arxlibertatis A cross-platform port of Arx Fatalis, a first-person role-playing game	Install	waiting for dev approval for Flathub submission
Aleph One flatpak install org.lhowon.alephone Aleph One is the open source continuation of Bungie’s Marathon 2 game engine	Install	Developer rejected Flathub submission (for now)
Xenia Canary flatpak install jp.xenia.xenia-canary Experimental Xbox 360 emulator	Install	Unsuitable for Flathub: no stable releases yet
Barrett flatpak install io.github.lunarmeadow.barrett A modern source port of Rise of the Triad	Install	Unsuitable for Flathub distribution due to beta status.
Vita3K flatpak install org.vita3k.vita3k Experimental PlayStation Vita emulator	Install	Unsuitable for Flathub: no stable releases yet
The Dark Mod flatpak install com.thedarkmod.tdm Steampunk stealth game	Install	Unsuitable for Flathub - not a proper distribution, just a wrapper
Prey flatpak install io.github.glkarin.idtech4 Modern ports for Doom 3 engine games	Install	Unsuitable for Flathub distribution due to messy repository name.
dsda-doom flatpak install io.github.kraflab.dsda-doom A vanilla-faithful Doom source port	Install	Developers have expressed no interest in Flathub submission.
Doom RPG flatpak install io.github.erick194.doomrpg-re Reverse engineered port of Doom RPG	Install	Pending submission
Open Supaplex flatpak install io.github.sergiou87.open-supaplex A reverse-engineered port of Supaplex	Install	Waiting for dev approval for Flathub submission
Abuse 2025 flatpak install io.github.apancik.abuse_2025 Modern port of Crack Dot Com's Abuse (1996)'	Install	Pending submission
Daggerfall Unity flatpak install io.github.interkarma.daggerfall-unity A modern port of The Elder Scrolls II: Daggerfall	Install	Developer refused Flathub submission
Perfect Dark flatpak install io.github.fgsfdsfgs.perfect_dark Modern cross-platform port of Perfect Dark	Install	Unsuitable for Flathub due to licensing restrictions
Prey flatpak install su.xash.xash3d-fwgs Half-Life compatible game engine	Install	Unsuitable for Flathub due to nonfree license
BuildGDX flatpak install net.duke4.m210.buildgdx Java-based cross-platform port of the Build game engine	Install	Pending submission to Flathub
OpenEnroth flatpak install io.github.openenroth.openenroth Modern cross-platform port of the Might and Magic VI - VIII game engine	Install	Unsuitable for Flathub: no stable releases yet
Aerofoil flatpak install io.github.elasota.aerofoil A modern cross-platform port of Glider PRO, the classic Macintosh paper airplane game	Install	Pending submission to Flathub

Graduates

These are some Flatpaks which used to be available here that have been replaced; in most cases they've been published on Flathub publicly with approval and help from the upstream projects.

App	Install	Status
DXX-Rebirth io.github.dxx_rebirth.dxx-rebirth Modern cross-platform port of the Descent engine	Install	This package has graduated to Flathub.
Mega Man Maker com.megamanmaker.megamanmaker Mega Man-themed game creation tool	Install	Wine-based packages have been removed.
GemRB org.gemrb.gemrb Classic role-playing game engine	Install	This package has graduated to Flathub.
Sonic Triple Trouble 16-Bit com.wixsite.stt16bit Fan remake of Sonic Triple Trouble in Genesis style	Install	Wine-based packages have been removed.
The AMC Squad io.itch.amcsquad.amcsquad Epic story-driven FPS running on the Build Engine	Install	This package has graduated to Flathub.
shadPS4 net.shadps4.shadPS4 PS4 Emulator	Install	This package has graduated to Flathub.
SPRAWL 96 io.github.voidforce.qsprawl A Quake mod based on the retro shooter SPRAWL	Install	This package has graduated to Flathub.
Prey io.github.glkarin.prey Sci-fi shooter with horror elements	Install	This package has been rolled into a combined package with the other glKarin idtech4 ports.
Ironwail io.github.andrei_drexler.ironwail A modern port of the original Quake engine, focused on performance	Install	Ironwail is now included in the LibreQuake Flatpak on Flathub.
Hydra Castle Labyrinth io.github.ptitSeb.hydracastlelabyrinth A modern Linux port of the "metroidvania" game Hydra Castle Labyrinth	Install	This package has graduated to Flathub.
Hat World: New Testament jp.ne.sakura.rpgex.littleworld RPG inspired by the SaGa series	Install	Wine-based packages have been removed.
Hero Core se.remar.herocore Sprawling action-exploration shooter	Install	Wine-based packages have been removed.
Quake 4 io.github.glkarin.quake4 Sci-fi first-person shooter	Install	This package has been rolled into a combined package with the other glKarin idtech4 ports.
Quakespasm net.sourceforge.quakespasm.Quakespasm A modern port of the original Quake engine	Install	This package has graduated to Flathub.
Azahar org.azahar_emu.azahar Nintendo 3DS emulator based on Citra	Install	There is now an official Azahar distribution on Flathub.
Castle of Elite se.remar.castle Puzzle platformer with a level editor	Install	Wine-based packages have been removed.
Sonic Galactic io.github.sonicgalactic Sonic the Hedgehog fan game	Install	Wine-based packages have been removed.
Sonic and the Fallen Star io.github.stardropsmh.sonic-and-the-fallen-star Sonic the Hedgehog fan game	Install	Wine-based packages have been removed.
Quake 4 com.idsoftware.quake4 Sci-fi first-person shooter	Install	This package has been replaced with the improved glKarin port.
The Force Engine io.github.theforceengine.tfe A modern cross‑platform port of “STAR WARS™: Dark Forces” with mod support	Install	This package has graduated to Flathub.
Metroid Planets com.metroidconstruction.metroid-planets Metroid (NES) fan game and creation tool	Install	Wine-based packages have been removed.
Iji se.remar.iji Huge action-adventure platformer	Install	Wine-based packages have been removed.
VkDoom org.vkdoom.vkdoom Modern Doom source port	Install	The vkdoom project has been shut down.
Nortantis com.jandjheydorn.nortantis Fantasy Map Creator	Install	Not touching vibe code with a ten foot pole.
PsychEngine io.github.shadowmario.fnf-psychengine Desktop implementation of Friday Night Funkin'	Install	This package has graduated to Flathub.
Prey org.icculus.prey Sci-fi shooter with horror elements	Install	This package has been replaced with the improved glKarin port.
Hexen II: Hammer of Thyrion net.sourceforge.uhexen2.uhexen2 A modernized source port of Hexen II	Install	This package has graduated to Flathub.
Exult Ultima VII Engine info.exult.exult Cross-platform engine for the Ultima VII games	Install	This package has graduated to Flathub.
Tomb Raider: War of the Worlds com.google.sites.trwotw Tomb Raider fan game	Install	Wine-based packages have been removed.

Setup

Current packages

Mega Man: Rock'n'Roll

Fade to Black

Arx Libertatis

Aleph One

Xenia Canary

Barrett

Vita3K

The Dark Mod

Prey

dsda-doom

Doom RPG

Open Supaplex

Abuse 2025

Daggerfall Unity

Perfect Dark

Prey

BuildGDX

OpenEnroth

Aerofoil

Graduates

DXX-Rebirth

Mega Man Maker

GemRB

Sonic Triple Trouble 16-Bit

The AMC Squad

shadPS4

SPRAWL 96

Prey

Ironwail

Hydra Castle Labyrinth

Hat World: New Testament

Hero Core

Quake 4

Quakespasm

Azahar

Castle of Elite

Sonic Galactic

Sonic and the Fallen Star

Quake 4

The Force Engine

Metroid Planets

Iji

VkDoom

Nortantis

PsychEngine

Prey

Hexen II: Hammer of Thyrion

Exult Ultima VII Engine

Tomb Raider: War of the Worlds