Old School Essentials, Dungeons & Dragons B/X on Discord, Owlbear Rodeo

Old School Essentials


Owlbear Rodeo

About the adventure DEEP CARBON OBSERVATORY is a critically-acclaimed OSR (Old School Renaissance) module where you explore the lands flooded by a recently destroyed dam, and the nightmares that have been released from the bottom of the now-drained lake. With cannibals, turbine golems, optical gods, giant platypuses, and eldritch things from the deep below, it's a fantasy-horror-sci-fi-steampunk fever dream! We'll be using the system it was designed for - the classic 1981 Dungeons & Dragons Basic/Expert set. If you've never played B/X D&D, it's a faster, simpler, more character-focused version of the rules. Players familiar with 5e will pick it up quickly, and players new to RPGs will find it much easier to get into. Sign up, roll up a character with me, and prepare to wander the drowned lands of Carrowmore!

Professional Game Master

Josh Ervin (Ironic Hero Games)


61 Reviews

Game Designer

30 years as a TTRPG player

30 years as a Game Master

424 games hosted

Brings Thousands of Digital Minis, Hundreds of Virtual Battlemaps, Large Swaths of D&D Beyond Content to the table

View Profile
Josh Ervin (Ironic Hero Games) profile

Additional Details

How to prepare

No actual experience is necessary. I will explain basic rules during character creation or during the first session. I have online dice rollers you can use, although if you have your own dice at home you're welcome to use them. All you need is a mic to be heard and a relatively quiet place to play. I will provide everything else!

What I provide

Both versions of DEEP CARBON OBSERVATORY - the original and remastered editions. Hours spent studying the module, making notes and play aides. My own art based on the module's style and tone. A campaign wiki/journal/forum maintained as we play A dedicated Discord channel where we can fraternize and discuss things outside of game-time Digital Character sheets All the other usual stuff :)

Gameplay details

I run a safe, welcoming game where everyone is respected and we adhere to certain safety protocols. My primary priority is for everyone to have fun. Please review this one-page PDF before signing up or playing: I have a zero-tolerance policy for bullying, sexual harassment, racism, sexism, homophobia, transphobia, or any other prejudicial behavior. Those who can't abide by these standards will be asked to leave with no refund. NOTE - Because of the nature of this module, there is some subject matter it will be impossible to avoid. These include: Natural Disasters (Floods) Drowning Child Endangerment / Death Cannibalism Darkness Tight Spaces If any of these are triggers/phobias for you, this is probably not the campaign for you - they're pretty intrinsic to the theme and overarching narrative. Other than that, I'm open to any discussions on subject matter.

Content warnings


Safety tools used
  • Breaks
  • Lines and Veils
  • Open Door
  • Session 0
  • X, N, and O Cards
How will character creation work

Characters will start at 5,000 XP (3rd Level for most classes) You can schedule a free meeting with me to make a character together (at least 24 hours in advance), or if you are familiar with the rules you can make your own and send me a copy. I have digital character sheets to track your character. If you sign up in the last 24 hours, I have pregens you can use. During the first session (or during the free character creation session) you will roll randomly on a table that gives you a personal connection to the adventure.

Players can expect

  • Combat/Tactics: Medium
  • Roleplay: High
  • Puzzles: Medium
  • Experience Level: None

Player reviews (61)

Find Old School Essentials Game Masters

Check out some of our GMs
See all

61 Reviews

Price per player-session
You will be charged when a session starts


  • Duration: 3 to 4 hours
  • Number of players: 2 to 6 players
  • Experience required: None
  • Glowing demon knight leading an army of undead

    Have a game in mind?

    We will make it happen!

    Request a game

    Browse Games by System

    What's StartPlaying?

    Tabletop Roleplaying Games Run by Game Masters
    • Find a game to join solo or search for a professional game master for you and your friends/coworkers/family.
    • Book your session and wait for the Game Master to approve you.
    • If you don't have a blast with your first game, your next game is on us.