What a messy topic. I could deep-dive into this, but once you dig deeper, you realize that time and movement have always been D&D's fatal flaw. Early versions of the game had you moving 120 feet every 10 minutes while mapping and exploring, and when you figure out the actual rate of speed, you have people literally moving in slow-motion through a dungeon.
At 0.136 miles per hour, the three-toed sloth is faster than you at 0.17 miles per hour. But this is careful exploration and mapping, so you will explore at a sloth's pace. Of course, the 10-minute exploration turn was always an artificial game construct, and we never questioned it - it just worked.
This was "game time" and "game movement," and it aggregated a lot of activities into one clean turn of time, and a 10-minute window. This isn't GURPS with its one-second turns. Simulation games were a natural reaction to this aggregation back in the late 1980s and early 1990s, and the original Top Secret game in 1980 also had one-second combat turns.
And I know, if you are exploring that slowly and that carefully, how does anyone fall into a pit trap? Every 12 feet you move, you take a minute checking the walls, ceiling, floor, and poking everything with a 10' pole. You poke the single foot of distance ahead of you for five seconds, then the next foot takes another five seconds, and so on, all the way down to 120 feet of hallway.
Then again, in real life, some things you would not expect to take an hour end up taking longer. When your life is on the line in a dungeon, I can see why many things all of a sudden take a lot longer to do.
AD&D had special multipliers for different types of movement. The game still used the 120' per 10 minutes for mapping and exploration, multiplied that speed by five for movement through known areas or using a map, and by ten if you were fleeing. Often, they kept the same movement on the map; they just reduced the time it took to move it, using fractions of a turn.
AD&D 2E tried reducing exploration rounds to a minute as cracks in the wall started to appear, and simulation games like GURPS and Champions started using real-world movement rates. The 10-minute turn was retained, but only for things like spell and torch durations.
D&D 3.0 and Wizards of the Coast removed the 10-minute exploration turn entirely. They used a system of "local movement" for 1 minute and "overland movement" per hour. "Tactical movement" was the combat per 6-second round.
D&D 5E is more of a freeform time tracking, whereas D&D 5.5E feels a little more structured and formalized. Dungeon movement is 200' per minute for slow, 300' for normal, and 400' for fast. All times are "as needed," so if searching a room takes 10 minutes, then it does. Movement is typically tracked per minute. Pulling in ToV and A5E: ToV tends to be like 2014 D&D, while A5E uses a journey system, but the movement rates are the same as in 5E.
Of all the 5E versions, D&D 5.5E has the cleanest exploration rules, with a dedicated section on the topic and suggestions for 1-minute and 10-minute blocks, depending on what is needed. D&D 2014 and ToV feel the softest on exploration structure, while A5E takes it on a more macro-scale and defines a journey for longer treks, while still keeping that softness at the lower scale.
All this to get to the point. What if you wanted to roll random wandering monster encounters every 2 BX-style dungeon exploration turns? In D&D 2024, this feels the easiest. Stick to one and ten-minute time blocks for movement and searching, keep an organized time record, and every 20 minutes roll for wandering monsters. The fact that D&D 5.5E has a dedicated section for exploration in the DMG helps a lot, and it allows me to easily slot this procedure in, along with a time tracker.
This can be easily extended to D&D 2014, ToV, and A5E. What makes D&D 2024 the winner among all other versions of 5E is that the game recognizes that structure is needed for running exploration and explicitly lays out a section to cover it. The earlier editions feel too soft on dungeon exploration (outside of A5E's structured journeys and the excellent rules for those), and that low-level, turn-by-turn, time-tracking, and torch-burning game just feels absent.
D&D 5.5E also adds more detail and structure to equipment, formalizing the in-game use of each item. This is likely the designers' experience with Pathfinder 2E coming up, with items needing discrete game uses and rules inside of them, rather than being more "loosey gooesy who cares" things you write on your character sheet to be used if the DM asks if you have something. D&D 5.5E also wins in terms of equipment rules, with a stronger set of rules to back them up.
Shadowdark, providing an excellent, tension-filled turn-based experience, likely influenced D&D 5.5E in tightening up the dungeon exploration rules and laying out the methods for those out in a section of the DMG. Competition here improved the game; the other 5E-based games were happy to stick with the very loose exploration system that felt more like narrative gaming.
What a messy, complicated subject!
So, in short, keep a tight time tracker for dungeon exploration, and track time in blocks rounded to the minute. If you rule, it takes 5 minutes to spike a door; mark 5 off the time tracker. One minute is the shortest measure of time tracked in the books outside of combat. Longer actions are best measured in 10-minute blocks.
Every 20 minutes, roll an old-school wandering monster check.
Every hour, another torch burns out.
Lanterns burn for 6 hours on one flask of oil.
It is easy to add detailed time-tracking to your game, along with old-school wandering monster encounters. What do you get for the effort? A ticking clock, forcing players to manage resources, spend time wisely, and it makes the environment come alive as wandering monsters creep about and hunt the characters in that maze of tight, twisting passages.



















