Wall Crawlers
by LeoBeo
Wall Crawlers adds Climber, a zombie-like mob that climbs walls and reaches players who try to wall off a base.
What it does
At night, Climber mobs appear on their own throughout the overworld. Unlike ordinary zombies, a Climber can scale walls, a lip around a base or a cave edge, and it burns in daylight as usual. Players can also get one from the Spawn Eggs tab in the creative inventory, which makes testing a wall design quick.
The mod is built around the ladders that Climbers leave behind. A Climber places a ladder that climbs the wall, and that ladder removes itself after a few minutes. Because the ladders rot away, a base cannot be sealed by a single wall: a player who digs into a hillside or builds a box around a base will still find a way in. Wall Crawlers runs on client and server, so the server and every player need the mod. Files are published for Fabric only, for 1.21.11 and 26.2, with 0.1.1 for 26.2 as the latest file. The code is not open source; it is released under All rights reserved, and the author asks that the mod not be re-uploaded or redistributed outside official pages.
Key features
Climbing zombie mob
Climber is a zombie-like mob that climbs walls and cave edges instead of stopping at the bottom of a barrier.
Temporary ladders
Climbers place ladders that remove themselves after a few minutes, so a route up a wall does not stay in place.
Natural night spawns
Climbers spawn in the overworld at night, so players meet them while exploring without any command.
Light server impact
The mod avoids constant world scans and per-ladder ticking of entities, keeping the cost of ladder climbing low.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Defending a base
Players who build walls or dig hillside bases must plan for Climbers, since ladders let them reach the top of a barrier.
Testing wall designs
Server owners and builders can spawn Climbers from the creative inventory to check how a structure holds up.
Who it’s for: Players who want a climbing threat for survival worlds, and server owners who want night mobs that get over walls.
How it compares
Hostile Climbers is a Fabric mod for 1.20.1 – 1.21.1 that is server-side only and open source under the MIT License, so players join without installing it. Zombie Ladder is a server-side Fabric mod for 26.1.2 and is not open source. Wall Crawlers differs by running on client and server for 1.21.11 and 26.2, and by being published under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Wall Crawlers | Fabric | 1.21.11 – 26.2 | Client and server | 2026-06-17 |
| Hostile Climbers | Fabric | 1.20.1 – 1.21.1 | Server-side only | 2026-02-18 |
| Zombie Ladder | Fabric | 26.1.2 | Server-side only | 2026-05-08 |
Questions
Does Wall Crawlers need to be installed on both sides?
Which loader does Wall Crawlers use?
Do the ladders Climbers place stay in the world?
In the catalog
Wall Crawlers is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 13,894 mods support Minecraft 26.2.
More from LeoBeo
Similar mods
What the author says
Wall Crawlers adds the Climber — an undead woodworker that doesn't stop at the bottom of your wall. When it can't walk to you, it builds a ladder and climbs. Box yourself in, wall off your base, dig into a hillside — if there's a wall between you and the Climber, it'll scale it and drop in after you. Climbers spawn…
Official listing
- Modrinth page
- modrinth.com/mod/wall-crawlers
- Owner
- LeoBeo
- Published
- 2026-06-14
- Updated on Modrinth
- 2026-06-17
- Facts verified
- 2026-10-15