d20land
Dungeon crawler · built on 5.5e d20land

Roll a hero, descend, and see how far the dice carry you.

5.5e rules applied to multiple game modes: automated combat, real spells and monsters, deep character builds.

Coming to Google Play · free, no ads
Three ways down

Pick a run or a place to practice

Every mode has its own hero and its own progress, so you can chase a legend in one and tinker with builds in another.

d20like

The roguelike run. A fresh level-1 hero climbs all the way to level 20 and faces a legendary foe, one fight at a time, pushing deeper for better loot.

◆ One life. Death is final.

d20Arena

One character, one-off encounters. The place to learn the system, test a build, and see exactly how a fight would play out, with nothing on the line.

Endless. Retry freely.

d20Adventure

An overland map with monsters encountered along the way, a persistent world, and a hero who carries between sessions. The long campaign, taking shape.

Ongoing. Progress carries over.
Real 5.5e

The rules you know, rolled in full

Built on the System Reference Document 5.2.1, not a loose imitation. The game does the bookkeeping so you can make the decisions.

Classes & subclasses

Every SRD class and subclass, from level 1 to 20, with multiclassing, feats, fighting styles, and epic boons all in play.

Spells by the book

Concentration, upcasting, saves, areas of effect, resistances. Each spell resolves the way the rules actually say it should.

Monsters & magic items

A deep bestiary with legendary actions and reactions, plus the loot (attunement, charges, and all) to stand against them.

The d20 math

Advantage and disadvantage, critical hits, opportunity attacks, the action economy. Every roll shown, nothing fudged in your favor.

Yours alone

No account. No ads. No tracking.

d20land runs entirely on your device. It never opens a network connection, so your heroes, your runs, and your high scores never leave your phone, because there is nowhere else for them to go.

Read the privacy policy
No data collectednothing leaves the device
No sign-injust open and play
No adsFree to play
Plays fully offlineairplane mode welcome