Back64 game arsenal

Instrument Ninja Arsenal

From core dojo drills to full MIDI boss battles.

This board holds the playable foundation, the next build queue, and the full long-range game stack. We can ship aggressively now without losing the bigger vision.

Live

15

Prototype

10

Queued

6

Concept

42

Live foundation

Next build queue

#1 MIDI Pitch Match Pro

Reproduce a heard note exactly on keyboard input.

Prototype
MIDI ActionMIDIpitch

#2 Chord Attack

Hear a chord and physically voice it on MIDI.

Prototype
Harmony CombatMIDIvoicing

#3 Rhythm Gate

Hear a rhythm, tap it back, and score timing accuracy inside the gate.

Prototype
Rhythm Forgetimingtap

#4 Note Sniper

A target note appears and the player must hit it on MIDI before it vanishes.

Prototype
MIDI ActionMIDIspeed

#5 Interval Builder

Hear a root note, see the interval target, and play the destination on MIDI.

Prototype
Interval CombatMIDItheory

#6 Velocity Strike

Score points by hitting notes within narrow MIDI velocity windows.

Prototype
MIDI ActionMIDItouch

#7 Inversion Assassin

Identify and play the correct inversion fast.

Prototype
Harmony CombatMIDIinversions

#8 Octave Hunt

Identify and play the same pitch class across multiple octaves.

Queued
MIDI ActionMIDIpitch class

Full arsenal

MIDI Action

9 modes

MIDI Pitch Match Pro

Reproduce a heard note exactly on keyboard input.

Prototype
MIDIpitch

Note Sniper

A target note appears and the player must hit it on MIDI before it vanishes.

Prototype
MIDIspeed

Velocity Strike

Score points by hitting notes within narrow MIDI velocity windows.

Prototype
MIDItouch

Octave Hunt

Identify and play the same pitch class across multiple octaves.

Queued
MIDIpitch class

Chromatic Escape

Climb or descend chromatically at increasing speed without timing drift.

Queued
MIDItiming

Blind Landing

No visual staff, only audio cue and timing pulse.

Concept
audiotiming

Ghost Note Catcher

Soft ghost notes must be played quietly while accents must land hard.

Concept
MIDIvelocity

Mirror Hands

Left and right hand patterns mirror around a center pitch.

Concept
two-handsymmetry

Pedal Boss

Sustain-pedal timing becomes the main scoring mechanic.

Concept
pedaltiming

Scale Realms

12 modes

Scale Runner

Hear a target scale and perform the note run in order on MIDI.

Prototype
MIDIpatterns

Key Signature Rush

The app sets a key and only diatonic notes score.

Queued
MIDItheory

Scale Degrees

Hear root + a note and name the scale degree (1st–7th).

Live
eartheory

Mode Maze

A scale plays — identify the mode by ear. No MIDI required.

Prototype
earmode

Bebop Burner

Land passing tones correctly in bebop scales.

Concept
jazztiming

Degree Cannon

Fire note degrees at incoming targets in the current key.

Concept
degreesspeed

Exotic Gate

Train harmonic minor, melodic minor, diminished, whole tone, and more.

Concept
earMIDI

Key Drift

The tonic changes mid-run and the player must adapt instantly.

Concept
key centeradaptation

Modal Shift

A groove keeps going while the mode changes underneath.

Concept
earadaptation

Pentatonic Hunter

Find all pentatonic notes while avoiding chromatic traps.

Concept
MIDIavoidance

Scale Surgery

Fix one wrong note in an otherwise correct scale.

Concept
MIDIcorrection

Wrong Note Minefield

Melodic lanes are safe except for planted forbidden notes.

Concept
MIDIavoidance

Interval Combat

11 modes

Interval Builder

Hear a root note, see the interval target, and play the destination on MIDI.

Prototype
MIDItheory

Consonance Combo

Chain stable intervals without breaking streak.

Live
earspeed

Ear Ladder

Find the one out-of-tune note in a melodic sequence.

Live
earsequence

Drone Finder

A drone plays and the player identifies the interval of the note above it.

Prototype
audiotap

Direction Duel

Hear two notes and name whether the second is higher, lower, or the same.

Live
eartap

Pitch Spotter

Hear a single note and name it — absolute pitch training for all levels.

Live
eartap

Compound Jump

Train 9ths, 10ths, 11ths, and 12ths specifically.

Concept
eartheory

Diatonic Check

Hear a note over a C drone — is it in the major scale or chromatic?

Live
eartap

Dissonance Doctor

Hear a rough interval and fix it by moving one note.

Concept
audioMIDI

Interval Collapse

The app gives two notes, player resolves them to the named interval.

Concept
MIDIear

Tritone Panic

React to tritones by resolving them in the correct direction.

Concept
earresolution

Harmony Combat

15 modes

Chord Attack

Hear a chord and physically voice it on MIDI.

Prototype
MIDIvoicing

Inversion Assassin

Identify and play the correct inversion fast.

Prototype
MIDIinversions

Chord Spy

Four chords play — one is the impostor quality. Find the odd one out.

Live
eartap

Guide Tone Runner

Trace only guide tones through a progression.

Queued
MIDIjazz

Cadence Quiz

Hear two chords and classify the cadence type: PAC, Plagal, Half, or Deceptive.

Live
eartap

Chord Change

A 4-chord loop plays twice. One chord changes in the second pass — identify which position.

Live
eartap

Chord Flip

Move one voice to transform one chord quality into another.

Concept
voice leadingMIDI

Chord Progressions

Hear a 4-chord loop and name the roman-numeral progression.

Live
eartap

Color Tone Raid

Add 9ths, 11ths, or 13ths only when they fit the harmony.

Concept
tensionsMIDI

Key Detect

Hear a ii–V–I cadence and name the key from 4 options. Eight major keys — pure ear training.

Live
eartap

Rootless Dealer

Build jazz voicings without the root.

Concept
jazzMIDI

Shell Game

Score by nailing 3rd/7th shell voicings across changes.

Concept
MIDIguide tones

Suspension Rescue

Resolve sus chords into target harmonies.

Concept
resolutionMIDI

Triad Sprint

Pure triads at high speed with random roots.

Concept
MIDIspeed

Voicing Tower

Stack tensions correctly without collapsing the harmony.

Concept
MIDIextensions

Rhythm Forge

10 modes

Rhythm Gate

Hear a rhythm, tap it back, and score timing accuracy inside the gate.

Prototype
timingtap

Rhythm Memory Chain

Rhythmic phrases grow each round like Simon.

Live
memorytiming

Human Clock

Hold tempo against a metronome that periodically disappears.

Live
tempointernal clock

Backbeat Arena

Accent placement matters more than total accuracy.

Concept
timingaccents

Polyrhythm Forge

Left hand and right hand lock different grids.

Concept
two-handpolyrhythm

Rest Discipline

Players lose points for notes where silence is required.

Concept
timingsilence

Subdivision Switch

Pulse stays steady while subdivisions mutate.

Concept
timingpulse

Swing Judge

The app scores feel, not just rigid quantization.

Concept
groovetiming

Syncopation Storm

Survive off-beat attacks without rushing.

Concept
timinggroove

Tuplet Trials

3s, 5s, 7s, and mixed tuplets under pressure.

Concept
timingtuplets

Reading Arena

10 modes

Sight Sprint

Read short notation fragments under a countdown.

Queued
notationMIDI

Accidental Ambush

Same pitch name, changing accidentals, fast response.

Concept
notationspelling

Bass Clef Boss

Pure bass-clef reading challenge.

Concept
notationbass clef

Chord Sheet Reactor

Read slash chords and hit them immediately.

Concept
chartsMIDI

Grand Staff Rush

Both clefs with cross-staff jumps.

Concept
notationpiano

Ledger Line Panic

Extreme high and low notes only.

Concept
notationrange

Nashville Number Chase

Build progressions from scale degrees live.

Concept
numbersMIDI

Reading Endurance

Long-form accuracy streak mode for serious practice.

Concept
notationendurance

Roman Numeral Raid

Translate harmonic function to playable chords live.

Concept
theoryharmony

Transposition Tunnel

The same phrase shifts key every round.

Concept
transpositionMIDI

Phrase Bosses

5 modes

Call and Response

The app plays a phrase and the player imitates it.

Queued
audioMIDI

Boss Battle Solo

Improvise over a backing track while the engine scores phrasing, target tones, rhythm, and risk.

Concept
improvMIDI

Melody Match

Hear a 4-note melody twice. Did one note change, or were they identical?

Live
eartap

Motif Mutation

Transform a motif by inversion, retrograde, or sequence.

Concept
compositionMIDI

Phrase Sculptor

Earn points for matching contour even if exact notes differ.

Concept
phrasecontour

Meta Games

1 modes

Battle Mode

Face 3 musical opponents with HP bars, crits, super-effective moves, and streak bonuses.

Live
eartapspeed