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Insidious Experiments (Level 4 PCs)
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Insidious Experiments (Level 4 PCs)


For a level 4 party!

Haedirn Lastlight is a respected elven wizard and sage. After the death of his lover Lyonthel, the elf has been overcome with grief and has locked himself away in his study- a small manor on the cliffs of Wailing Crag. Haedirn has not been seen for over a year now, and those that knew him are beginning to worry.

Worse still, a band of ogres has been terrorizing the nearby town, slaughtering the town folk and haughtily boasting the elf wizard is dead. The PCs must put a stop to the ogres' attacks, make way to Wailing Crag to root out the rest of their gang, and lay Haedirn Lastlight's tortured remains to rest.

Insidious Experiments is part of Dungeons on Demand: Volume One.

Dungeons on Demand

Dungeons on Demand is a line instant dungeons you can drop into your campaign, each is designed for 4-5 player parties of specified levels, and each dungeon is complete with a back story, hand drawn maps, traps, puzzles, and reference information to monsters and treasure. You can customize each one to fit in your campaign however you wish, and each one can be played through in one or two gaming sessions.



Player Safe Maps - Maps for each encounter area (and the dungeon as a whole) come prepared for both the players and GMs. Helpful for when you want to give the party something to visualize without revealing hidden monsters, traps, and treasure.

Quick Reference Icons

Quick Reference Icons - GM maps are fully labelled and complete with quick reference icons. These icons give you all the information a GM needs for an encounter area - whether there's monsters lurking to fight, traps the party must contend with, hidden treasure, NPCs to talk to, or a puzzle they must solve. Each icon is given a complete description in the encounter break down.

Combat Difficulty Guages

Combat Difficulty Gauges - Each encounter description provides detailed information on how monsters perform in battle. These gauges allyou to quickly determine how difficult a fight will be for an appropriately leveled party. These gauges rate an encounter from 1 star (very easy) to 5 stars (deadly). Complete with core rulebook page references and full descriptions of custom monsters!


Dungeons on Demand is not affiliated with Wolpertinger Press or Dungeon-on-Demand, but you should definitely check them out!


Author Dan Coleman has been a Dungeon Master for two decades now, first picking up the dice with second edition. He can tell you what THAC0 stands for, a first level fighter's saving throw against rods, staves, and wands, and why players get excited to find "Treasure Type H."

Since then he's been through every new edition, and has written custom classes, spells, items, adventures, and system mods for each. By day he's a humble graphic designer and illustrator, but by night he's a full time role-player and game designer. 


Take a look here:

This title is included in Dungeons on Demand: Volume One!


The first volume of ;Dungeons on Demand ;includes the first four dungeons:

  • Bandit's Nest ;- Level 1 Adventure ;Dungeon ;
  • Insidious Experiments ;- Level 4 Adventure Dungeon
  • Fierce Tempers ;- ;Level 8 Adventure Dungeon
  • Lord of Gloomthrone ;- Level 12 Adventure Dungeon
It also includes the following supplements:
  • New Twists on Old Monsters ;- Gaming Supplement
  • Imbued with Magic ;- Gaming Supplement

Do you like Dan's work? Check out MajiMonsters, a monster-catching, fantasy RPG!


The ;MajiMonsters Core Rulebook ;contains...

  • Information on binders, the heroes of the world
  • How to make a customized character
  • Instructions for Game Masters
  • A horde of magical relics to find and use
  • All the rules for combat and playing the game
  • A catalog of all 114 known MajiMonsters
  • Descriptions of over 440 combat techniques
  • Sample NPC allies and rivals
  • Rules for making your very own, custom MajiMonsters!
  • PDF version includes bookmarks
 Customers Who Bought this Title also Purchased
Reviews (0)
Discussions (2)
Customer avatar
Lisa W June 27, 2018 11:56 pm UTC
I'm looking forward to running this one soon. How many hours do you think it would take a 4-5 players to complete?
Customer avatar
Dan C June 28, 2018 12:23 pm UTC
Lisa - I average about 6 hours or so for this one. It will vary depending upon how much your group likes to roleplay and interact with the NPCs, and how much you add or cut from the adventure. 6 is a good estimate, but I've heard from customers who've ran it at conventions in 4-hour time slots, and some people take as much as 8-12 hours if the group really wants to explore every nook and cranny, or if they are a little slower than normal resolving combats.
Customer avatar
Lisa W June 28, 2018 4:26 pm UTC
Thanks Dan. I'll report back on how my group does.

BTW what do the stars indicate in the monster description boxes?
Customer avatar
Dan C June 28, 2018 7:17 pm UTC
Thanks! Each encounter is rated on a scale of 1 to 5 based on how difficult it will be for a parties of appropriate size and level.
Customer avatar
Lisa W June 29, 2018 9:27 pm UTC
Hey one more thing. I bought this as a bundle and it did not come with a player version of the map. Can I get one?
Customer avatar
Lisa W July 02, 2018 5:32 am UTC
I was mistaken. My bundle does have player safe maps.

We played the adventure today. It took appropriate 6 hours and although they did not get to every room, they got through most of it including the boss fight.

Thanks again for making an excellent product. It was easy to run and my players loved it.
Customer avatar
Dan C July 04, 2018 2:12 pm UTC
Thank you! Sorry for the late reply but I am happy to hear you found the maps and the party had fun.
Customer avatar
MICHAEL V January 23, 2016 12:18 am UTC
Ran this campaign with my group. Bought it as a bundle. It was very well done and easy to run. I love that the experience points are already calculated and updated if the creature has extra abilities. My party had lots of fun with it. My only qualm, which is my own obsessiveness, is that everything is lettered rather than numbered which I am use to. Great product and can't wait to run the other adventures from Coleman.
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File Last Updated:
September 14, 2016
This title was added to our catalog on April 02, 2015.