Game Master’s Guide Complete Collection (5e)

Better Monsters. Better Traps. Better Rituals.

The Game Master’s Guide Complete Collection combines all three Game Master’s Guide books into a massive modular toolkit for Game Masters who want deeper worldbuilding, more dynamic encounters, smarter monsters, deadlier traps, and richer fantasy campaigns.

Whether you're designing memorable villains, creating dangerous dungeons, or adding meaningful rituals to your campaign, these three books cover some of the most common challenges Game Masters face.

Together, they expand nearly every part of your game—from religion, rituals, and prophecy systems to monster customization, tactical combat options, environmental hazards, trap networks, villain lairs, and battlefield complications.

How do these books work together?

A sinister cult leader built with Traits & Actions.

Protected by Traps & Terrors.

Performing a ritual from Rites & Rituals.

That's a single encounter using all three books, and that's just one example.

Get all 3 Game Master's Guides and save $20 instantly

Save 22% compared to purchasing each title separately.

Designed for fast integration into existing campaigns, these plug-and-play systems work equally well for dungeon crawls, wilderness adventures, political intrigue, dark fantasy settings, sandbox campaigns, and long-term worldbuilding.

Compatible with both the 2014 (5e) and 2024 (5.5e) rules.

Preview of interior pages below.

What You’ll Get

Game Master’s Guide to Rites and Rituals (5e)

• Create immersive religions, rites, and festivals for every fantasy religion and any alignment (the festivals apply to religious or secular events).
• Includes adventure hooks, options, and GM advice for running any religious or secular festival, contest, or tournament (archery, jousting, etc.).
• Spice up your campaign with random tables for mysterious omens and cryptic prophecies.
• Explore supernatural magical traditions like sympathetic magic, true names, and more.
• Includes PC background kits for playing an exorcist or psychic (real or fraudulent). These kits can also be used for NPCs.
• This book is also useful for players whose characters are spellcasters or members of a cult or religion.

Game Master’s Guide to Traits and Actions for Monsters and NPCs (5e)

• Customize beasts, monsters, and NPCs with 1,800 modular traits, combat actions, reactions, tactics, auras, and themed, innate spellcasting suites.
• Organized alphabetically by creature or damage type.
• All actions that scale by creature size (such as Bite, Claw, or Tail attacks) are included so you don't have to do the math yourself.
• Hundreds of traits that can be granted to PCs with clear GM options and advice on how to award them.
• Includes useful traits and actions for commonly hired or bribed NPC henchmen, hirelings, and specialists, including alchemists, bandits, coach drivers, executioners, herbalists, pirates, poisoners, politicians, sailors, soldiers, torturers, etc.
• Features sample "beefed up" creatures from the 5e MM to show you how to customize any beast, monster, or NPC using this book.
• As a bonus, all creature types include thoughtful GM advice on how to run them as allies or enemies. If they can talk, it includes random tables with sample lines of cinematic dialogue.

Game Master’s Guide to Traps and Terrors (5e)

• 80 magical and nonmagical traps (many with multiple variants) for objects, interiors, and exterior locations.
• Includes historically-inspired battlefield, castle, rural, urban, and wilderness traps and defenses (drawbridges, moats, murder holes, etc.).
• Cost, time, personnel, and other requirements to build each trap, plus reset times (assuming it's not a one-shot or always "on" effect). This lets players add them to their strongholds or turn the tables on their enemies.
• 115 extra magical and nonmagical options to customize any 5e trap, not just the ones in this book.
• Build dangerous dungeons, villain lairs, battlefield hazards, trap networks, magical defenses, and high-stakes encounters.
• Thousands of modular combinations for campaign design, encounter building, lair and location customization, and worldbuilding.
• Systems designed for Game Masters who want more cinematic encounters, richer settings, and more memorable adventures with less prep time.
• This book is also useful for players whose characters are rangers, rogues, scouts, or other trap-oriented adventurers.

Why Game Masters Recommend the Game Master’s Guide Series

• Expand your GM toolkit with practical, plug-and-play systems you can use immediately.
• Add more variety, depth, and replayability without increasing prep time.
• Solve common campaign challenges with reusable mechanics instead of one-off adventures.
• Mix and match modular tools across any setting, adventure, or campaign style.
• Designed for long-term campaign support—not disposable filler.

Awards

SILVER BESTSELLERS

— Awarded by DTRPG

Average Customer Rating Across All Books in Bundle

⭐⭐⭐⭐½ (4.7/5 stars)

Top Reviews

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO RITES & RITUALS  — The Daily Dungeon Master (Blog)

"For GMs who enjoy worldbuilding, this is exactly the sort of resource that can turn abstract lore into playable material."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO RITES AND RITUALS — Dan D. (Amazon Customer)

“Wow! A serious MUST for game masters. This book has so many good ideas, scenarios and useful information that just one of the game campaign ideas/rituals is worth the cover price… Mage Gate [delivers] a literal cornucopia of mind candy.”

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO RITES AND RITUALS — Nathaniel H. (Amazon Customer)

“While religion and its ceremonies play a part in many campaigns… this book provides a whole lot of well-thought facets, both mechanical and conceptual.”

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO RITES AND RITUALS —Chlorisaan (Amazon Customer)

"Very well thought rules for GMs who like to use rites, omens, etc."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO RITES AND RITUALS — DTRPG Customer

"A must have book for all those who play clerics and people of faith. ....this is a useful resource for both player and DM's."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO RITES AND RITUALS — Splinterverse (YouTube Channel)

Any direction you want to go—binding, cursing, charming—[MageGate’s] got it covered… there’s just really infinite directions you can go with this… so check it out!

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAITS AND ACTIONS — The Daily Dungeon Master (Blog)

"This is probably one of the most useful books in the [MageGate] catalog for an experienced GM."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAITS AND ACTIONS — Nathaniel H. (Amazon Customer)

"Everything you want to know about traits and actions, covering a wide range of situations, with useful tables to boot. Well-written and easily accessible for GMs of all levels."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAITS AND ACTIONS — Pat (DTRPG Customer)

“A TON of information regarding Traits. This book gives the GM a lot of different traits to choose from… All of them appear to be balanced and can add depth to a campaign.”

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAITS AND ACTIONS — Splinterverse (YouTube Channel)

"Just tons and tons of [incredible] options… [if you want to customize monsters and NPCs] this is a good book for you!"

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAITS AND ACTIONS — Dan D. (DTRPG Customer)

"This book is packed with amazing content that will put your game and gaming experience on another level. Well worth the cover price."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER’S GUIDE TO TRAPS AND TERRORS — Bing Copilot

“If you want a single best modern 5e-compatible trap book, go with Game Master’s Guide to Traps and Terrors.”

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER’S GUIDE TO TRAPS AND TERRORS — The Daily Dungeon Master (Blog)

"A trap should create decisions. A good trap book should therefore provide more than a collection of 'roll Dexterity or take damage' mechanics. MageGate's emphasis on modular effects is promising because it gives GMs the ability to alter traps to fit the adventure rather than forcing every dungeon to feel like the same collection of mechanisms."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAPS AND TERRORS — Amazon Customer

“This is the kind of guide a Game Master drools over. The traps are well written and easy to understand. There are plenty of options and ways to customize traps to fit your campaign needs.”

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAPS AND TERRORS — Chris G. (Amazon UK Customer)

"This book is packed full of nifty ideas for designing a setting, and for on the fly needs for DMs."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAPS AND TERRORS — Adepledge, Amazon UK Customer

"This is a well-designed and thought-out resource. Overall, a great source of inspiration for any game and well worth a purchase."

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAPS AND TERRORS — Splinterverse (YouTube Channel)

“I really think this is an exciting title! [The book] covers all the bases… With this book, you don’t have to. It’s already there!”

⭐⭐⭐⭐⭐ VERIFIED REVIEW FOR GAME MASTER'S GUIDE TO TRAPS AND TERRORS — DTRPG Customer

“Once again, MageGate hits it out of the park! A very large selection of balanced traps. I really like the cost of each trap being included for players wanting to use them in their base.”

Why These Three Books?

Every campaign eventually needs memorable villains, dangerous locations, and compelling magical events.

Rather than buying these resources separately over time, this bundle gives you three of MageGate's most versatile GM toolkits at a discounted price.

Ready to Build Better Campaigns?

The Game Master's Guide Complete Bundle gives you three premium GM toolkits designed to help you create better villains, more dangerous adventures, and more memorable campaigns—with less prep.

Future-proof your campaigns with reusable systems for religion, monsters, NPCs, and traps.

Combine and customize them in endless combinations.

Your next prep session could be your shortest one yet.

Get the Complete Bundle.