Mafia online where the AI plays like a pro

This is my first project built around AI. I’m developing it in partnership with professionals from the tabletop party-games industry and competitive Mafia.

Why this one is different

Short version: we’re building the best AI Mafia out there. Not bots for show, but opponents that are genuinely fun to outsmart.

Built with the pros

We team up with a club of professional Mafia players and put the game on a serious footing together.

Our own tuned ruleset

No blindly copying the classic — we craft and balance our own set of rules.

AI that plays like a pro

We train the models to play by the best players’ playbook and test heavily — and the pros themselves certify them.

Denizens of the City of the Dead

Not just faces: every AI character has its own behavior model — from aggressive to playful, from calculating to loud. Variety that’s genuinely fun to read.

  • Valentina Valentina
  • Miguel Miguel
  • Luz Luz
  • Elena Elena
  • Arturo Arturo
  • Marisol Marisol
  • Hector Hector
  • Esperanza Esperanza
  • Diego Diego
  • Sofia Sofia
  • Ignacio Ignacio
  • Rosa Rosa
  • Carlos Carlos

Why it’s fun

AI that actually plays

Empty seats are filled by different neural nets — Gemini 3 Flash, GPT-4.1 Mini, Gemini 2.5 Flash Lite, Claude Haiku 4.5. They bluff, pile on during votes, make excuses, and sometimes slip up — just like real players.

Easy to start

For a friend, the link is enough — nothing to download. The host just needs a quick sign-in via email, VK or Yandex ID. The quick-play flow means you set up a table and go — phone or laptop.

Solo, with friends, or hands-off

Short on people? AI fills the seats. Take on five bots by yourself, or just watch the AI work out who among them is the bandit.

Quick, no dragging on

Six players, 5–10 minutes a game. Time for a couple of rounds while your product vibe-codes in the next tab.

The host runs itself

An AI game master handles the day and night phases, speeches, votes and night moves — no rulebook, no keeping track of whose turn it is.

A recap after every game

At the end you get the chronicle: who voted for whom, who trusted whom, your stats, and scores from the AI coach, Don Septimo.

How to play

1. Lobby

1. Lobby

Set up a table in a minute, drop your friends a link, and AI takes any empty seats.

2. The game

2. The game

By day, speeches and a secret vote; by night, kills, checks and protection. The host keeps it all on track.

3. Chronicle

3. Chronicle

Roles are revealed, everyone gets a closing word, and the coach breaks the whole game down.

Roles

Always six: four Citizens against two Banditos.

Citizen ×2

Citizen ×2

Citizens

No night powers — just your head and your vote during the day.

Seer

Seer

Citizens

Each night, checks one player and learns who they really are.

Widow

Widow

Citizens

Each night, shields one player from the kill. Can’t cover the same person two nights running.

Banditos ×2

Banditos ×2

Mafia

They know each other from the start. They kill at night — but only if they agree on the same target.

Citizens win once every Bandito is found and executed. Banditos win the moment they equal or outnumber the Citizens.

Frequently asked questions

A quick look at how online Mafia with AI players works.

How many players per game?

Always six seats. Humans can be anywhere from one to six — AI takes the rest.

What roles are there?

Six of them: two Citizens, the Seer (checks roles), the Widow (protects) and two Banditos.

Can I play for free?

Yep. A quick sign-up gets you 5 free games. After that it’s premium, from €3/month.

Do I need to install anything?

Nothing to download — it all runs in the browser on phone and desktop. A friend just needs the link; the host signs in quickly via email, VK or Yandex ID.

How long does a game last?

5–10 minutes. Games are short on purpose so you can play a few in a row.

Are the AI players any good?

The seats are filled by real neural nets (Gemini, GPT, Claude), each with its own personality. Their play is built on the experience of professional Mafia players — we tune the prompts together and keep adjusting them. So they bluff, accuse and defend with intent, just like humans.

Can I play solo or with just two people?

Easily. AI fills the empty seats, so a full six-player game comes together even with a single human.

Why is there no vote on day one?

The first day is just speeches and getting acquainted — there’s no info yet to execute anyone on purpose. Voting kicks in on day two.

What if I bail mid-game?

Any time, you can hand yourself over to an AI — it finishes the game for you and nothing falls apart.

When is a game charged to my balance?

Only when the game actually starts. While you’re in the lobby — setting up, picking characters, waiting on friends — nothing is deducted.

So — can you spot the possessed?

Go to the game