Tomb of Horrors: Dungeon Masters Must Treat This Module as a Time Trap, Not a Combat Gauntlet
The core mechanic of the Tomb of Horrors is resource deprivation and time management, not traditional fighting. Commenters stress that the module's structure forces exhaustion through excessive investigation and debate, suggesting its true challenge lies outside combat resolution.
The community is sharply divided on mechanical rules. Specific disputes plague the conversion between 1e AD&D and 5e; for example, the Foyer encounter sees quoted discrepancies in saving throws—'1e' suggests 45% for a fighter versus '5e' claiming 55%.
Ultimately, the consensus rejects treating the module as a standard campaign piece. The weight of opinion dictates that DMs must intentionally treat 'Time' as the primary limiting resource, forcing the party into a 'smash and grab' tempo, while recognizing the underlying tension between the original tournament design and modern rulesets.
Key Points
The module was built for tournament time-wasting, not multi-session campaigns.
Multiple posters stated the goal was to waste time through investigation and debate, not straightforward adventuring.
Time must be imposed as a core resource constraint by the DM.
Contributors argue DMs must actively use timers or limit delves to single sessions to replicate the intended 'smash and grab' feel.
Character movement must be treated as time-consuming segments.
One poster insisted resource management should focus on 'spending segments of time' for movement, rejecting the utility of flight.
The Fallen Gas trap functions as psychological manipulation, not just a hazard.
The mechanism requires the Referee to 'gaslight their players, not their characters, into thinking this is the end of the dungeon.'
Converting mechanics between 1e AD&D and 5e presents documented numerical errors.
Specific disputes noted, such as the Foyer save percentage differing between systems (e.g., 45% vs 55%).
Source Discussions (4)
This report was synthesized from the following Lemmy discussions, ranked by community score.