About
REKKR is a Viking and Celtic fantasy total conversion distributed as its own standalone IWAD, meaning it requires no Doom or other commercial game whatsoever. The free standalone version offers 3 episodes (E1–E3) plus separate bonus maps, with completely original monster designs, weapons, music, and atmosphere built on the Doom engine. The base game is entirely free via download from manbitesshark.org. A separate commercial release, REKKR: Sunken Land (Steam/GOG/itch.io), reworks the project as a standalone game bundled with GZDoom and adds a fourth canonical story episode (plus the free VR-3KKR challenge maps). Also compatible with Chocolate Doom for players who prefer a faithful retro rendering path.
Identity
Launch
- Binary
- flatpak
- Options
- run org.zdoom.GZDoom -iwad REKKRSA.iwad
- Needs files
-
- REKKRSA.iwad — the free standalone REKKR IWAD, from manbitesshark.org
Runtime
- Runs as
- Native Linux
- Proton
- not needed
⚙ Setup notes
Install: GZDoom is installed via Flatpak: flatpak install flathub org.zdoom.GZDoom.
IWAD: Download the free standalone zip from manbitesshark.org and drop REKKRSA.iwad into ~/.var/app/org.zdoom.GZDoom/.config/gzdoom (the GZDoom Flatpak config dir). Because REKKR is its own IWAD (not a mod), it is passed via -iwad rather than -file — no separate Doom WAD is needed. The standalone zip also bundles a copy of Chocolate Doom and a launch script.
Controller: GZDeck (github.com/flegald/GZDeck) is a controller-friendly launcher for GZDoom games in Steam Game Mode. As a non-Steam game it needs --no-sandbox as a launch argument; place IWADs in ~/.var/app/org.zdoom.GZDoom/.config/gzdoom.
Alternative: Also playable in Chocolate Doom for a more faithful retro rendering path.
The one thing to know
Completely standalone: REKKRSA.iwad IS the game, no Doom or other IWAD required. Download the free standalone zip from manbitesshark.org and drop REKKRSA.iwad into ~/.var/app/org.zdoom.GZDoom/.config/gzdoom.
Launch: Pass it via -iwad (not -file) since it is an IWAD, not a mod PK3.
Separate commercial release: REKKR: Sunken Land is a separate paid game (Steam/GOG/itch.io), not DLC for this free IWAD — it ships its own bundled GZDoom and adds a fourth canonical story episode.
Controller: Use GZDeck (github.com/flegald/GZDeck) for a Game Mode-friendly launcher; it needs --no-sandbox as a launch argument when added as a non-Steam game.
Alternative: Also playable in Chocolate Doom for a more faithful retro experience.
Community guides
Write-ups and threads from people who got this (or a similar) game running. deckport links to them — it doesn't reproduce them.
Get the artwork
deckport never hosts game images. Open this game on SteamGridDB, pick
the cover / hero / logo / icon you like, and drop them into the
game folder under .deckport-art/ before you push it to the
Deck. The importer files them under the right names automatically.
Run it on your Deck
Two files: the one-time importer (deckport.py) in your
Deck's home folder, and this game's install helper. Copy the game
into ~/Games and run the helper with Steam closed — it
writes the recipe (binary, launch options)
and registers the shortcut with artwork.