Index Card RPG (ICRPG), designed by Hankerin Ferinale and published through Runehammer Games, is a modular tabletop roleplaying system that combines the simplicity of old-school gaming with a fresh, fast-paced design philosophy. Originally released in 2017 and currently in its Master Edition, ICRPG has steadily built a reputation for being fast, flexible, and visually evocative, especially for do-it-yourself (DIY) GMs and groups that love creative improvisation.
Unlike many modern RPGs that strive for cinematic realism or mechanical depth, ICRPG embraces accessibility and momentum, making it a unique system well-suited for both newcomers and seasoned players seeking a break from rules-heavy experiences.
Core Philosophy
ICRPG is built on several core principles:
- Speed over simulation
- Rulings over rules
- Visual and tactile play
- Shared narrative focus
- Simple mechanics that scale
The system encourages GMs to think in terms of zones, challenges, and dynamic pacing, rather than rigid maps or granular stats. It’s an RPG that wears its DIY nature proudly, emphasizing creative problem-solving over exhaustive mechanics.
What’s in the Box (or Book)?
The Master Edition compiles and refines content from earlier releases, including:
- Core rules
- Character classes
- Gear and loot tables
- Monster stat blocks
- Setting content (Alfheim for fantasy, Warp Shell for sci-fi)
- GM advice
- Hundreds of index card illustrations for encounters, gear, and terrain
True to its name, the original version of ICRPG was built around using index cards as visual and narrative prompts. While this isn’t strictly necessary to play, it reflects the system’s dedication to tactile, modular, and fast-paced storytelling.
Mechanics Overview
🎲 Rolls and Targets
ICRPG is powered by a simplified d20 system. The core mechanic is straightforward:
- Roll a d20, add a relevant stat modifier, and try to beat a room-wide TARGET number set by the GM.
Unlike D&D or Pathfinder, all actions—whether attacking, leaping over a pit, or negotiating with a noble—use this same mechanic.
There are only a few stats: Strength, Dexterity, Constitution, Intelligence, Wisdom, Charisma, with effort dice (more on this below) serving to differentiate outcomes.
⚙️ Effort Dice
One of ICRPG’s standout mechanics is Effort, a second roll that determines how much progress a character makes on a task after succeeding at the d20 check. Depending on the action, players roll different dice:
- Basic Effort (d4)
- Weapon Effort (d6)
- Magic Effort (d8)
- Ultimate Effort (d12, triggered by special conditions)
This system allows for gradual progress toward objectives, mimicking real-life action pacing—like chipping away at a locked door or steadily hacking a computer system.
🧱 Hearts and Timers
Challenges, monsters, traps, and objectives often have Hearts (10 HP each). This quantifies abstract concepts (like “disable the tower shield generator”) in a clear and gamified way, which helps GMs manage pacing and tension.
ICRPG also introduces Timers—d4 countdowns that trigger events (e.g., reinforcements, explosions, terrain shifts). These create urgency and momentum in encounters, replacing static initiative charts or drawn-out tactical delays.
Character Creation
Creating a character in ICRPG is a breeze, typically taking 10–15 minutes. Players select:
- A class or archetype
- Stat bonuses (via point-buy)
- Loot or starting gear
- Unique traits or flavor abilities (depending on setting)
Each class comes with core abilities and suggested equipment, but players are encouraged to customize or invent content freely. Instead of long ability trees, characters are shaped by the gear they carry and the roles they play.
Settings and Play Styles
ICRPG includes two core settings:
- Alfheim – A fantasy realm with a Norse-inspired tone and mythic themes.
- Warp Shell – A science-fantasy setting featuring starships, alien tech, and interdimensional missions.
Other optional settings have been released (e.g., Blood and Snow, Vigilante City, Ghost Mountain), showing ICRPG’s versatility across genres.
Whether you’re running a dungeon crawl, cyberpunk heist, or mythic wasteland adventure, the system supports it with just minor flavor tweaks. It’s built for genre-hopping and experimentation.
Art and Visual Style
ICRPG’s most iconic element is its hand-drawn visual assets. Hankerin Ferinale’s bold, high-contrast illustrations—originally intended for printed index cards—are charming, evocative, and designed for play. They provide:
- Terrain pieces
- NPC faces
- Loot cards
- Spell effects
- Dungeon rooms
These visuals are not just eye candy; they’re a functional GM toolkit that helps keep the game flowing at the table or online (especially when used with VTTs like Roll20 or Foundry).
GM-Focused Design
ICRPG is heavily GM-facing. It gives GMs tools to:
- Prep an adventure in under an hour
- Build “rooms” with defined threats and goals
- Set TARGETs and HEARTs to abstract challenge difficulty
- Introduce dynamic encounter design using Timers, Treats, and Threats
A huge section of the rulebook is devoted to advice, philosophy, and templates for building adventures. It’s one of the few RPGs that truly teaches you how to GM in an actionable, non-theoretical way.
Strengths
✅ Fast, unified mechanics: d20 + Effort simplifies all actions.
✅ Visual, tactile design: Cards and tokens enhance clarity and immersion.
✅ GM-friendly: Tons of support and tools for streamlined session prep.
✅ Flexible genre support: Fantasy, sci-fi, post-apoc, superhero, and more.
✅ Progression through gear: Loot drives mechanical evolution, not XP bloat.
✅ Modular expansions: Bolt on what you need—crafting, vehicle combat, etc.
✅ Strong community: Passionate fanbase, active Discord, free tools.
Weaknesses
❌ Less depth for long campaigns: Some players may miss intricate character builds or advanced progression paths.
❌ Abstracted rules may alienate some: If you like simulating details (like weapon reach or encumbrance), you’ll need to house-rule.
❌ Balance is seat-of-your-pants: The light mechanics put more weight on the GM to keep things fair and engaging.
❌ DIY expectation: ICRPG doesn’t hand-hold. It’s a system for builders and improvisers, not rulebook crawlers.
Ideal Use Cases
ICRPG excels in:
- One-shots and short campaigns
- High-speed action games
- GM-light prep styles
- Con games or online play
- Teaching RPGs to new players
It may be less suited for:
- Highly tactical or simulationist groups
- Deep mechanical character customization
- Campaigns that demand slow-grind progression
Conclusion
Index Card RPG is a standout example of minimalist design meeting maximal impact. It strips away the clutter of modern RPGs while still delivering thrilling, memorable play. With its clean mechanics, visual storytelling, and incredible GM support, it invites you to get creative and get playing—fast.
ICRPG isn’t trying to replace the likes of D&D, Pathfinder, or GURPS. Instead, it carves out its own niche: a kinetic, visually-driven, rules-light toolkit for storytellers who want momentum over minutiae.
If you’re a GM looking for freedom, flexibility, and flair, or a group that wants to game more and prep less, ICRPG might just be your next favorite system.