Nat 20 Survivors is a gothic survivors-like RPG that runs in the browser. Twelve classes, dice-driven choices, seven realms, eight map events, and a free demo that lets you play three classes across two realms. You can play it here: nat20survivors.com. This post is about how it came together and what the demo actually lets you play.
It is a different game from Number Swarm, the survivors-like I am building for kids, and the contrast is the interesting part. Number Swarm is move-only, auto-attacks, and math questions gating power-ups. Nat 20 Survivors is dice, choices, and a gothic world. Same genre, opposite instincts.
What we cover
- What the game is
- How the dice work
- The classes, realms, and map events
- What the free demo includes
- How it differs from Number Swarm
What the game is
A survivors-like RPG in the browser. You pick a class, you survive escalating waves, and you make choices as you go. The gothic setting is the flavor: dark castles, strange creatures, and a world that feels like a tabletop campaign that got loose.
It runs entirely in the browser, no install, no account. That was a deliberate choice. A browser demo is the fastest way to let someone try a game, and a game that needs an install before you know whether it is fun is a game most people never try.
How the dice work
The dice are the heart of it. Choices in the game are dice-driven, which means luck is a real mechanic, not a decoration. You roll, and the roll changes what happens next. That does two things: it makes every run different, and it makes the player feel the stakes of each decision.
Dice are also honest. A random number is a random number, and the game does not hide it. That transparency is part of the appeal. When a roll goes your way, it feels earned. When it does not, it feels fair, because you saw the die.
The classes, realms, and map events
Twelve classes, each with its own way of surviving. Seven realms, each a different world to fight through. Eight map events that change what happens as you move. The numbers matter because they are the variety: twelve classes means twelve different games, and seven realms means the world does not repeat itself quickly.
The map events are the spice. They interrupt the survival loop with something unexpected, a choice, a risk, a reward. A survivors game without events becomes a grind. The events keep it a game.
What the free demo includes
The free demo gives you three classes and two realms. That is enough to feel the game: the dice, the waves, the choices, the escalation. It is not a teaser that ends before the fun starts. It is the game, with a smaller menu.
The demo is the try-before-you-commit step, and it is the right size. Three classes is enough to find one you like. Two realms is enough to learn the loop. If you want the rest, the full game is there.
How it differs from Number Swarm
Number Swarm is the kids game: move only, auto attacks, XP drops, level-up drafts, and math questions gating the power-ups. I wrote the first devlog here: Number Swarm Devlog: A Survivors-Like Game for Kids. The design instinct is simplicity: one input, clear choices, and math as the gate.
Nat 20 Survivors is the opposite instinct: more choices, more luck, more atmosphere. Dice instead of math questions. Gothic instead of playful. The genre is the same, but the games are built for different players and different moods.
That contrast is why both exist. A genre is not one game. It is a shape, and the shape can hold a kids math game and a gothic dice RPG at the same time.
Final thoughts
Nat 20 Survivors is a browser demo that respects your time: no install, a free demo with real content, and dice that make every run different. If you like survivors games and you like rolling dice, it is worth a run.
The short version: twelve classes, dice-driven choices, seven realms, and a free demo with three classes and two realms, all in the browser with no install.
