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When I am a game master, I traditionally avoided extensive use of randomization during my tabletop roleplaying games. I preferred was for narrative flow and session development to be guided by deliberate decisions as opposed to random chance. However, I decided to try something different, and I'm truly pleased with the outcome.

The Catalyst: Observing a Custom Mechanic

An influential streamed game features a DM who regularly requests "chance rolls" from the adventurers. He does this by selecting a specific dice and defining possible results contingent on the result. While it's fundamentally no unlike rolling on a random table, these are devised spontaneously when a course of events has no obvious resolution.

I chose to experiment with this approach at my own table, primarily because it seemed engaging and offered a break from my normal practice. The results were fantastic, prompting me to think deeply about the perennial dynamic between pre-determination and improvisation in a tabletop session.

A Powerful Session Moment

During one session, my group had survived a massive battle. Later, a cleric character inquired after two beloved NPCs—a sibling duo—had survived. In place of deciding myself, I let the dice decide. I told the player to make a twenty-sided die roll. I defined the outcomes as: a low roll, both died; on a 5-9, only one succumbed; on a 10+, they both lived.

The die came up a 4. This led to a deeply poignant moment where the party found the remains of their friends, forever holding hands in death. The party held a ceremony, which was especially significant due to previous character interactions. As a final gesture, I chose that the forms were strangely transformed, showing a spell-storing object. I randomized, the item's contained spell was exactly what the group needed to solve another major story problem. You simply script these kinds of magical moments.

Sharpening On-the-Spot Skills

This incident led me to ponder if chance and thinking on your feet are actually the core of this game. While you are a detail-oriented DM, your improvisation muscles can rust. Players often excel at ignoring the most detailed narratives. Therefore, a effective DM needs to be able to adapt swiftly and fabricate details in real-time.

Employing similar mechanics is a fantastic way to train these talents without going completely outside your comfort zone. The trick is to use them for minor situations that won't drastically alter the overarching story. To illustrate, I would not employ it to determine if the king's advisor is a secret enemy. Instead, I would consider using it to figure out whether the characters enter a room right after a critical event unfolds.

Enhancing Player Agency

This technique also helps maintain tension and cultivate the sensation that the story is alive, progressing in reaction to their actions in real-time. It combats the perception that they are merely pawns in a DM's sole script, thereby enhancing the collaborative foundation of storytelling.

This philosophy has long been integral to the game's DNA. Original D&D were reliant on random tables, which suited a playstyle focused on exploration. Even though current D&D often focuses on plot-driven play, leading many DMs to feel they must prep extensively, this isn't always the best approach.

Finding the Sweet Spot

Absolutely no issue with doing your prep. Yet, it's also fine no problem with relinquishing control and permitting the whim of chance to determine certain outcomes instead of you. Direction is a big factor in a DM's responsibilities. We need it to manage the world, yet we often struggle to cede it, at times when doing so might improve the game.

The core advice is this: Do not fear of temporarily losing your plan. Try a little randomness for inconsequential outcomes. The result could create that the unexpected outcome is infinitely more powerful than anything you might have scripted by yourself.