Fan Content
This page lists all of the current fan content and modules that players have created around the OPR game systems. Below are links to those modules.
All OPR Games
Construction & Conquest
Addon for both Grimdark Future and Age of Fantasy, changing into a fully fledged turn-based strategy, with a lot of extended features:
- base building, with many different types of buildings, including defense installations,
- resource mining and management from battlefield field deposits,
- army recruitment,
- technology unlocks,
- superweapons.
Designed to be fully compatible with all balanced armies available on Army Forge, both official, community and 3rd party ones, while fitting on one page.
Gameflow is inspired by Red Alert series, and playtested quite heavily locally in each version before global release. Discord handles of the authors: bartholomeus_betula & Crassvs from OPR Poland community (feel free to contact us with any feedback!).
Latest version (currently v1.3) available HERE in English and Polish as one paged PDFs for both Grimdark Future and Age of Fantasy.
Diceless OPR (DOPR)
Minor Mod made to convert OPR games to rely less on the randomness of dice rolling and focus more on the strategy aspect of the game. The creator of this module is Jamis Buck.
The latest version (v0.2) can be found here (PDF document).
Grimdark Future
Grimdark Future Horde Mode
Currently in a beta phase of gameplay, it is an unofficial modification of Poorhammer’s 40k Horde Mode v0.83, designed to work with Grimdark Future from OnePageRules. The creator of this module is RelicLord in the OPR discord.
The latest google document can be found here. There is an accompanying Table Top Simulator table created by Custodes in the discord that can be found here.
Apocalyptic Games - Formations
This set of rules is meant to complement the OPR system, accounting for truly gigantic armies. It is compatible with the Advanced Rulebooks of GF and AoF. It is suitable for games of 4000pts and above and meant to reduce the number of activations by using groups of units instead of individual ones. It can also be combined with any optional rule set, including Apocalyptic Games. The creator of this module is .nedland on discord.
The latest google document can be found here.
TinyGF
A modification to the Grimdark Future rules designed for epic battles with 6mm to 15mm models. Rules are on the Tiny Battles of the Great Crusade Facebook page or here [1] . Armylists are all found on the Army Forge under the Community lists and begin with "TinyGF." Note that army composition is described in the details of each army - without that information the entries won't make sense.
Grimdark Future - Advanced Factions
A lightweight set of rules for Grimdark Future to allow for flavorful additions of narrative faction rules, as well as a dynamic way to incorporate certain rulesets from the Advanced Rulebook.
The google document can be found here.
Grimdark Future - DoW Mod
This is an unofficial game mod created for Grimdark Future inspired by Dawn of War real time strategy game. The creator of this mod is Mr.LittleSword in the OPR discord. Creators e-mail: lex.lib45@gmail.com
The latest google document can be found here.
Mode strvey can be found here.
Grimdark Future: Battlefields
A 6-10mm OPR modification by EMD that allows for small and large scale battles where each model represents an entire squad of infantry, up to massive creations of war. A key change to the OPR formula for GDF:BF is the use of Base-4 instead of 6, meaning the majority of infantry move 4", weapons like rifles shoot 8", with large weapons like artillery stretching out to 36".
Rules and armies lists can be found on the Army Forge Community Books tab, as well as unit proxy army builders in the Steam Workshop for Table Top Simulator, by searching for GDF:BF.
Feel free to ping EMD on the OPR Discord if you have any questions.
Steam Workshop for AoF/GDF:Battlefields introduction game.
Mech Warfare
In the near future, humanity has traveled among the stars, colonized thousands of new worlds, and the wars of these new systems are dominated by massive walking war machines. Mech Warfare is an OPR ruleset modification designed for 6-8mm miniatures. Models should be based on 30mm hex bases, or 25-32mm round bases.
Because of the scale difference and core rule changes, this modification and army book are not designed to work with other Grimdark Future army books.
Feel free to ping EMD on the OPR Discord if you have any questions.
Google Drive link to current Mech Warfare documents.
Pre-Alpha link for Mech Warfare v2.0, which will be built into Army Forge.
Grimdark Future Competitive Redesigns
A list of redesigns for armies that need help in competitive play. The goal is to make all armies relatively equal in power level to Alien Hives.
| Army Name | Army Forge Link | |
|---|---|---|
| Battle Brothers | Link | |
| Blight Disciples (Plague Disciples) | Link | |
| Blood Brothers | Link | |
| Change Disciples | Link | |
| Craft Ship High Elves | Link | |
| Custodian Brothers | Link | |
| DAO | Link | |
| Dark Elf Raiders | Link | |
| Dwarf Guilds | Link | |
| Dark Brothers | Link | |
| Elven Jesters | Link | |
| Havoc Brothers | Link | |
| Human Defense Force | Link | |
| Jackals | Link | |
| Knight Brothers and Inquisition | Link | |
| Lust Disciples | Link | |
| War Disciples | Link | |
| Watch Brothers | Link | |
| Wolf Brothers | Link | |
| Orc Marauders (pre-GR) 2025-04 | Link |
Grimdark Future: Firefight
GF:F Close Quarters
Homebrew rules for playing GF:F on a tiny board. Originally posted on r/onepagerules by u/rabidgremlin.
The original reddit post can be found here.
Grimdark Future Firefight Horde Mode
Posted on reddit by u/ASentientRedditAcc on r/onepagerules for a ruleset for a skirmish style adaptation of a horde mode, for the Grimdark Future: Firefight rule set.
The original reddit post can be found here.
Soldiers of Fortune
Solo or coop ruleset that allows players to control a Company of Mercenaries and take on procedurally generated Contracts to fight the powers at be.
Available for free on Itch.io
Age of Fantasy
Age of Fantasy: Battlefields
A 6-10mm OPR modification by EMD that allows for small and large scale battles where each model represents an entire squad of infantry, up to massive creations of war. A key change to the OPR formula for AoF:BF is it use of Base-4 instead of 6, meaning the majority of infantry move 4", weapons like rifles shoot 8", with large weapons like artillery stretching out to 36".
Rules and armies lists can be found on the Army Forge Community Books tab, as well as unit proxy army builders in the Steam Workshop for Table Top Simulator, by searching for AoF:BF.
Feel free to ping EMD on the OPR Discord if you have any questions.
Steam Workshop for AoF/GDF:Battlefields introduction game.
Age of Fantasy: Regiments
Age of Fantasy: Battle Masters
Battle Masters is a 10mm fantasy strategy game that is a total conversion project for the OPR system. Using inspiration from older 10mm fantasy games, players will activate heroes within their army, and use those hero's orders to controller their forces. Combat is simultaneous and fast paced, without book keeping mechanics like wound tracking.
Models should be mounted on rectangular based, and the Google Drive link below contains print out for playing 2D armies on dominos. Because this is a total conversion, this modification and army books are not designed to work with other Age of Fantasy army books.
Feel free to ping EMD on the OPR Discord if you have any questions.
Google Drive link to Current AoF: Battle Masters documents.
Age of Regiments: Masters
Age of Regiments: Masters is a 10 mm historical and fantasy strategy game developed as a total conversion project for the OPR system. Google Drive link to Current Age of Regiments: Masters.
AoF Massive Battles Regiments Tweaked (Beta)
This tweak to the base AoF Regiments rules was developed by Daniel (Nexus Wargaming) and Sam. It tweaks AoF Regiments to have similar playstyles as Kings of War and Warhammer: The Old World. The tweaks are meant to allow for mass battles to run more smoothly and for the game to feel similar to more traditional rank-and-flank games.
Link to the Beta rules - https://drive.google.com/file/d/1g6opXgyXuiPEg0O0Bgmg0hCnLvboTQtT/view?usp=sharing
Modifications With Broken Links
Grimdark Future: Firefight - Ancient Derelict
GFF ruleset to create a dungeon crawl game. Made by brutusaurelius, welshy and bobsomething. Originally posted on OPR Forum.
Available for free here.
Wayback machine link to the original post.
AoFR: Warlords
An alternate game mode designed for 10mm miniatures and all the things that usually accompanies, AoFR:Warlords is made by Liver Ripamonti (ripripla on discord)and maintained as a community book through army forge studio. It is very modular, allowing to customize any unit to fit almost any miniature or army, and since it functions with only one book, balance changes can be easily done.
The Discord Thread can be found here. The Army Forge page can be found here.