Claude Code, played as an adventure: soundtrack, hero and quest log.
Important
miod's music only works on macOS.
I'm an engineer, but these days I solve the boring problems entirely by vibe coding. Somewhere along the way I felt I had lost the creativity and curiosity I used to have when writing code myself.
So I started thinking about how to make vibe coding fun again. codyssey turns a Claude Code session into a little adventure: while the agent does the work, you hear it as music, watch a pixel knight fight through it, and read it back as a quest log.
It's three mods in one plugin, and each one turns on and off on its own.
Three Claude Code mods in one plugin.
Generative music written on the spot while Claude works. No music files, no library, no AI model.
- Every task picks its own flavour (lo-fi, chiptune, ambient, jazzy and 8 more), key, chord progression, tempo, sound and theme.
- The mood follows what the agent is doing: reading sounds airy, editing bright, testing focused, shipping triumphant, failing tense until a command passes.
- The faster it spends tokens, the busier the music.
- Above the prompt, one line shows the mood, flavour, key, tempo and energy, with a wave under it that scrolls with the music:
A pixel knight walks a narrow strip above the prompt while Claude works.
- Every tool call is an encounter: reading finds a scroll, editing a file fights its monster (slime, goblin, skeleton, orc, spider), web searches raise bats and ghosts, and subagents send a skeleton.
- A failed command costs a heart. A test that passes after a failure summons the Bug Dragon.
- Committing, pushing or opening a PR opens a treasure chest.
- Every two minutes of play a boss comes: King Slime, Ogre, Lich, Demon, then the Shadow King.
- Monsters and bosses grow tougher as the knight levels up.
- Kills bring gold and xp, and xp brings levels. Progress carries from task to task within a session; a new session starts a new knight. The knight makes camp while you're away.
What you can meet on the road:
| When Claude… | The knight meets | What it brings |
|---|---|---|
| Reads or searches files (Read, Grep, Glob) | A scroll | Heals 1 heart |
| Edits or writes a file | A Slime, Goblin, Skeleton, Orc or Spider (the file name picks which) | 1 xp and 1 to 3 gold, plus 1 xp and 1 gold for each extra heart |
| Searches or fetches the web | A Bat or Ghost | Same as any monster |
| Runs a command | A Goblin or Wolf | Same as any monster |
| Hands work to a subagent | A Skeleton | Same as any monster |
| Calls an MCP tool | A Slime | Same as any monster |
| Runs a command that fails | A hit | Loses 1 heart |
| Runs a passing test or check after a failure | The Bug Dragon, 4 hearts | 2 xp and 5 gold or more per heart |
| Commits, pushes, merges, tags, or opens or merges a PR | A treasure chest | 5 to 24 gold |
| Has been playing for 2, 4, 6, 8, then 10 minutes | King Slime (3 hearts), Ogre (4), Lich (5), Demon (6), Shadow King (7) | 2 xp and 5 gold or more per heart |
The knight picks a weapon at random for every strike:
| Weapon | Range | Power | How often | How it hits |
|---|---|---|---|---|
| ⚔️ Sword | Close | 1 heart, or 2 with a special | Often | A slash. Now and then it becomes a glowing yellow special |
| 🪓 Axe | Close | 2 hearts | Sometimes | A heavy chop |
| 🔱 Lance | A little further | 1 heart | Sometimes | Reaches the monster a few steps early |
| 🗡️ Dagger | Far | 1 heart | Sometimes | Thrown early, flies to the monster |
| 🔥 Fireball | Furthest | 2 hearts | Rarely | Cast from far off, flies to the monster |
Thrown weapons only open a fight. Once a monster has been hit and is coming in close, the knight switches to the sword, axe or lance. Each weapon is one file in hooks/knightod/game/weapons/, with its range, power and how often it's picked.
How the game works:
| Mechanism | How it works |
|---|---|
| ❤️ Hearts | The knight starts with 5. Every monster and boss shows one heart and the number it has left beside it, like ♥3. Past 5 hearts, the knight's line shows the count too, like ♥7/12. |
| 📈 Monsters level up | Monsters start with 1 heart and gain one every 3 knight levels. Bosses gain one every 2 knight levels, on top of their own. |
| ⭐ Levels | Each level needs 8 more xp than the last. A new level adds a heart and heals the knight fully. |
| 👹 Boss fights | A boss swings back and can wound the knight, but never lands the last blow. Some of the knight's strikes are specials that hit for 2. |
| 💀 Falling | Losing the last heart to a failed command brings the knight back with full hearts and half the gold. |
| ⚡ Speed | The knight walks faster the quicker Claude spends tokens: normal, then double from 30k tokens a minute, then triple from 80k. |
| 📜 Progress | Level, hearts, kills, gold, quests, play time, bosses slain and falls add up from task to task, for the rest of the session. A new session starts a new knight. Between tasks the knight sits by a campfire. |
| ⏸️ Pausing | If Claude ends its turn while a background command or subagent is still running, the knight shows ⏸ d and stays on the road. When the last one finishes, the knight makes camp. |
Restyles the transcript so the story is easier to follow.
- Tool calls become one-liners, and their results show only when they fail.
- Claude's replies stand out from the tool noise.
- Two styles. game (the default): each tool call wears a badge (☰ SCOUT, ⚒ FORGE, ⚔ FIGHT, ☄ MAGIC, ♞ ALLY, ⚗ POTION), Claude speaks from a nameplate, your prompts sit in a ◆ YOU box, and finished background tasks arrive as ⚑ QUEST rows.plain : the same quiet transcript without the badges.
Needs Claude Code 2.1.290 or newer.
claude plugin marketplace add delexw/codyssey
claude plugin install codyssey@codyssey
Then start a new session. All three mods start on.
If you loaded miod, knightod or scrollod on their own before (from delexw/miod, or a folder in CLAUDE_CODE_PLUGIN_DIRS), remove those first, or their commands are registered twice.
All three come in the one plugin, and each turns on and off with its own command:
- Turn one off:
/miod off,/knightod offor/scrollod off, andonto bring it back. The choice is remembered in later sessions. - Game style: scrollod starts in the game style. Switch to the plain look with
/scrollod style plain; it stays plain in later sessions until you pick/scrollod style game.
/miod is the music on or off?
/miod off stop the music
/miod on play again from the next task
/miod wave list the wave looks: bars, line, mirror, dots, pulse
/miod wave dots switch the wave to the dots look
/knightod this session's game: level, hearts, kills, gold, bosses
/knightod off put the knight away
/knightod on send the knight out again
/knightod reset start over with a new knight
/scrollod on or off, and which style
/scrollod off show the transcript as Claude Code draws it
/scrollod on restyle it again
/scrollod style plain the quieter plain look
/scrollod style game back to badges, nameplates and quest rows
Each mod lives in its own folder under hooks/, and hooks/register.tsx turns all three on.
- miod: each mood is one row in
hooks/miod/moods.ts, each flavour one row inhooks/miod/flavours.ts, each sound style one entry inhooks/miod/styles.ts, and each wave look one file inhooks/miod/waves/. - knightod: each weapon is one file in
hooks/knightod/game/weapons/; monsters and bosses are sprites inhooks/knightod/sprites/; which tool raises which encounter is inhooks/knightod/game/cues.ts, and the boss order and timing inhooks/knightod/game/bosses.ts. - scrollod: the game style's badges are in
hooks/scrollod/badge.ts, and the styles inhooks/scrollod/style.ts.
Then check it:
claude plugin validate .
claude plugin test .
Run a checkout without installing it with claude --plugin-dir <path to this repo>.
- miod's music only plays on macOS, where Claude Code plays it through
afplay. - miod's sound is simple chiptune-style tones.
- codyssey only sees the session it's loaded in.