A monster battler in your menu bar.

Collect 82 creatures, battle with AI-narrated combat, crack open lootboxes and earn idle income — all from a tiny borderless window under your macOS status bar.

creatures 82 rarities 6 combat AI-narrated themes 4 macOS
$ git clone https://github.com/L-ubu/MUTABAR.git && cd MUTABAR && ./install.sh

GitHub· Combat· Features· The loop· Why

01Type anything. The AI narrates it.

No fixed move list — type a free-form attack and a local LLM narrates the outcome, with real mechanics underneath: mutation types, status effects, traits, crits.

mutabar — wave 5 (boss) 
  GLACIALOTH (legendary)          BOSS: PYROCLASM
  HP ████████████████░░ 82%         HP ██████░░░░░░░░ 31%

> freeze the ground beneath him and shatter it upward

  The arena floor crystallizes in an instant — Glacialoth
  drives a fist down and a spear of ice erupts beneath
  Pyroclasm, steam hissing where fire meets frost.

  CRITICAL HIT! -47 HP  · ice ▲ fire — super effective

  ✦ Pyroclasm is staggered — next attack deals double

02What you get

◆ 82 creatures, 6 rarities

Animals, mythological beasts, famous monsters, originals and hybrids — from Common to Mutagen, with shiny variants at +15% stats.

◆ AI-narrated combat

Free-form attacks narrated by a local LLM. Eight mutation types play rock-paper-scissors underneath the prose.

◆ Lootboxes done right

Three mutabox tiers with a CS:GO-style rolling reveal. Golden shimmer, legendary rainbow, mutagen pulse.

◆ Idle income

Assign creatures to the idle arena for passive mutagen — offline earnings calculated on next launch, up to 8 hours.

◆ Roguelite runs

Escalating waves, boss every 5th round, and random between-wave events: Healing Spring, Mysterious Trader, Shrine.

◆ Actually native

Borderless window anchored to the menu bar icon, 4 switchable themes — Tokyo Night, Phosphor, Frosted Glass, Adaptive.

03The loop

Thirty seconds between meetings is one full turn of the wheel.

StepWhat happens
battleType an attack, watch the AI narrate it, earn mutagen
openSpend mutagen on mutaboxes — Standard, Premium, Legendary
collectNew creatures land in the Mutadex, ASCII art included
idleBench your squad in the arena, earn while you're away
ascendBoss waves, events, and the slow hunt for shinies

04Why it exists

The decisions worth knowing about, written down.

Games should fit in the gaps

Not every game needs a fullscreen window and an hour. MUTABAR lives where your cursor already is, and a battle fits in a compile.

Local LLM, not an API bill

Combat narration runs on a local model. No keys, no latency, no cost per battle — and it works offline.

ASCII art is a feature

Every creature in the Mutadex is hand-drawn ASCII. A menu bar game should wear its terminal soul proudly.