Depth Spelunking Reboarding and Elevator Power (v0.7.0b)

Reboarding is the last part of every floor: the tasks are done, and now the whole squad has to get back into the elevator before it leaves. It is also where a lot of runs end. This guide collects what the sources say about the return window, elevator power and the doors, and labels every number by where it comes from. Verified for v0.7.0b on 2026-11-09. If you are new, read the beginner guide first.

What is reboarding in Depth Spelunking?

Once a floor’s required tasks are finished, the run enters a reboarding phase. The elevator is the safe home base you leave from at the start of every floor, and reboarding is the countdown to get back to it.

The experience’s own badge list confirms that being left behind is a designed outcome. Left Behind reads “Leave a teammate behind or be left behind by the elevator at the end of a floor”, and its flavor text jokes “I told you we should have gotten reboarding” (Roblox badge text, checked 2026-11-09).

How long do you have to get back to the elevator?

The community wiki says the reboarding phase gives you one minute. The DevForum update log mentions reboarding as a phase and as an upgrade but does not publish a number, and we have not timed it in the game client, so treat 60 seconds as Wiki-sourced, unverified in-client.

Two details from the same wiki page matter for planning:

• Delvers can leave the elevator, or be knocked out of it, while the doors are closing. The wiki notes this essentially dooms them (Wiki).
• A teammate who is far from the elevator when the phase starts is the usual cause of a left-behind (Editorial). Agree on a callout before the last task.

How does elevator power work?

The elevator has a power meter. It is the floor’s clock: when it runs out the lights go off.

At the drain rate above, a full meter lasts about 200 seconds with no tasks completed (100% divided by 0.5% per second, our arithmetic from the Wiki figure). Each finished task buys back 15 percentage points, which is why finishing tasks quickly is also a power skill.

The Lights… on? badge reads “Complete a floor during a Power Outage or while the power is at 0%”, so running out of power does not by itself fail a floor (Roblox badge text). It does leave you doing tasks in the dark.

What do the elevator doors do?

The doors were added in 0.7.0a (the Recode). The official log describes them as “a brand new elevator, now with closeable doors for keeping the entities out” (Official).

• Closing a door blocks entities from using that doorway, in exchange for a faster power drain (Wiki trivia, which says this was teased on 30 January 2026).
• Every open or close costs 3% power at once (Wiki).
• All doors are forced open during reboarding (Wiki), so you cannot hide inside the elevator while you wait for the last teammate.
• Foxxive has said in a livestream that a few entities, such as Wardens, may be able to pry or break doors open (Wiki trivia, secondhand, Unverified).

Our advice (Editorial): close a door only when a chase is real. The 3% toll plus the extra drain adds up, and the doors open again for the return trip anyway.

What does the Reboarding upgrade do?

Reboarding is also the name of an elevator upgrade you can vote for at the terminal. It first appears in the official 0.5.5 log as one of three new upgrades, and the 0.6.6.6 log lists it among rebalanced upgrades and says “Reboarding tier 3’s alarm has been removed” (Official).

The wiki describes three tiers:

Unverified: the wiki text does not mention the 0.6.6.6 alarm removal, so the current tier-3 behavior may differ from what is written above. Check the terminal’s upgrade text in your game.

Reboarding checklist for a squad

These steps are Editorial: our suggested routine, not an official procedure.

1. Know the route home before the last task. Look at the map tab in the elevator terminal while you still have power.
2. Call the last task. Say “last task” in chat so nobody starts a long minigame after the phase begins.
3. Move together. If a hearing entity is on the floor, crouch back and keep the noise down; see Warden.
4. Keep sprint for the end. Walking is the quiet default; spend stamina only when the countdown is short. The reasons are in priority and fear.
5. Count heads at the door. The elevator leaves early once everyone is inside, so a quick headcount saves time rather than costing it.
6. If someone is stuck, a dead player can still become a ghost and keep scouting; see how to revive.

What we have and have not verified

If your game shows different numbers, please send a correction with your game version and what you saw. Related: Hard Mode puts more entities between you and the elevator, and the patch notes list when the elevator changed.