FIRST_RUN.md step 3 to go live.Every card is a concept-specific configuration of one mechanic family. Cards are data; families are engine code. A card is playable as soon as its family·mode is implemented.
interval_echo · music · recall.listen
Concept: Intervals
Player does: Hear two notes; name the interval to open the door
Breaks: An interval is named by its letters alone
An interval's name comes from counting the scale steps between the notes and its quality, not just the two letter names.
rhythm_bridge · music · builder.tiles
Concept: Meter & note values
Player does: Fill each measure so the note values sum to the time signature
Breaks: A measure can hold any number of beats
A measure's note values must add up to exactly the number of beats set by the time signature.
scale_builder · music · builder.tiles
Concept: Major & minor scales
Player does: Build the scale from the whole/half-step pattern
Breaks: Every scale uses only white keys
A scale is defined by its pattern of whole and half steps, which can require black keys depending on the starting note.
chord_forge · music · builder.tiles
Concept: Triads
Player does: Stack thirds to forge the requested chord
Breaks: Any three notes make a triad
A triad is built by stacking specific thirds on a root, not any arbitrary combination of three notes.
fifths_wheel · music · sequencer.cycle
Concept: Circle of fifths
Player does: Rotate the wheel so each key is a fifth from the last
Breaks: Keys are ordered alphabetically
The circle of fifths orders keys by a perfect fifth between neighbors, not by alphabetical letter name.
tempo_sync · music · tuner.oscillator
Concept: Tempo
Player does: Match the drum's beats per minute to the march
Breaks: Tempo means loudness
Tempo is the speed of the beat, measured in beats per minute, and is independent of how loud the music is.
Which socket each family mounts on in each genre (LIBRARY §5). The boss socket is always allowed. Hosts built tonight: dungeon, mystery, platformer.
| Family | Dungeon crawler boss: boss | Investigation adventure boss: accusation | Side-view obstacle course boss: boss | Grid puzzle / escape room boss: boss | Management sim boss: crisis |
|---|---|---|---|---|---|
| Truth Finder | chest / boss Treasure chests; the one bearing the false claim is a mimic | cross_exam / accusation One witness's claim contradicts the facts; object to the lie | gate / boss Three doors; the one with the false claim collapses | tile_board / boss Remove the odd tile to release the chain | event_card / crisis Advisors' claims; the false one tanks a stat |
| Sequencer | door / boss Glyph door pressed in process order | corkboard / accusation Rebuild the timeline on the corkboard | gap / boss Bridge planks in order; the wrong order leaves a gap | conveyor / boss Order the parcels on the conveyor | research_node / crisis Tech tree order |
| Tuner | door / boss Vault rings, catapult, or alchemy dials spinning on the function | lab / accusation Calibrate the instrument; set the lighthouse sweep | moving_platform / gate / boss Saw wheels, launch pads, a balloon that only lifts when tuned | lock / beam_board / boss Dial locks and gear trains | policy_dial / production_line / crisis Machine settings on the production line |
| Mapper | altar / enemy / boss Rune line on the altar floor, or an archery range on a number line | conversation / accusation At the auction, bid the right magnitude; pin the map | gap / boss The floor is a number line; land on the value | tile_board / boss Place the tile at its position on the axis | market / crisis Place goods on the price line |
| Sorter | enemy / boss Type-matched weapons; category-keyed doors | evidence / accusation File claims into case folders | gate / boss Only matching-category platforms are solid | goal_pad / boss Push crates onto category pads | market / crisis Route goods to districts |
| Linker | enemy / boss Chain lightning between pairs | corkboard / accusation String the board | pickup / boss Grapple anchors | pipe_board / boss Flow-style pairing | research_node / crisis Supply links |
| Investigator | door / boss Rooms are hypotheses; clues seal their doors | accusation / corkboard Pin clues, eliminate suspects, accuse | gate / boss Clues seal the doors of eliminated hypotheses | tile_board / boss Logic grid | event_card / crisis Policy debate with evidence |
| Function World | altar / boss Rune track whose floor height is f(x) | lab / accusation Sensor readings converging on a timestamp | gap / boss The terrain is y = f(x); the missing tile | tile_board / boss Track tiles that follow f | market / crisis Price curve over time |
| Balance | altar / boss Alchemy scale; spilled atoms become slimes | archive / accusation The ledger is off by one entry | switch / boss Seesaw bridge | lock / boss Cancel terms, DragonBox-style | ledger / crisis Balance budgets and flows |
| Simulator | enemy / boss Ecology rooms, reactor waves | lab / accusation Keep the patient stable overnight | moving_platform / boss Population or glucose lifts | beam_board / boss Place species so all are fed | crisis / policy_dial Run the economy or ecosystem |
| Builder | forge / boss Craft a molecule, circuit, or golem program | lab / accusation Build the compound or circuit | switch / boss Wire the elevator; word-block bridge | tile_board / boss Valence grid, Lightbot | production_line / crisis Lay out the factory |
| Transformer | forge / boss Crafting-bench machines | lab / accusation Decode the letter or cipher | pickup / gate / boss Power-up machine, cipher platforms | conveyor / pipe_board / boss Route through machines | production_line / crisis Processing chain |
| Accumulator | forge / boss Fill the reservoir to forge the key | archive / accusation Rebuild totals from rate logs | gap / boss Fill the pit; velocity ghost | conveyor / boss Fill tanks | production_line / crisis Output over time |
| Recall | enemy / boss Spells are flashcards, cooldowns are spacing | conversation / accusation Riddle-keeper interrogation | pickup / boss Type the term to double-jump | tile_board / boss Timed word tiles | research_node / crisis Quick recall boosts research |