花 · 桜 · 春
proto.type · game dev mode

The first team that
understands game feel.

Every AI game dev tool fails the same way. The code works. The game doesn’t feel right. The agents have no concept of player experience, juice, feedback loops, or what it actually feels like to hold a controller and play.

Morning Report · M1NIPPON · Play Feel Review authored by Hana
feel_intent
core sensation
“The car should feel planted but alive. Drifting should feel like controlled chaos — dangerous but learnable.”
audio role
“Sound is 50% of the feel. Engine note and tyre screech are as important as any visual.”
reference feel
“Initial D for drift personality. Ridge Racer for arcade responsiveness.”
Hana’s review — 847 laps
drift system — good
Slip angle progression is smooth. Exit snaps too abruptly — recommend 120ms grace window. Minor feel issue, not blocking.
audio — needs attention
Tyre screech needs 4–6 variants minimum. Single sample causes repetition fatigue in extended sessions.
84
feel integrity
phase 2 of 7
Custom Playtest MCP Server · built by the agents, for the agents phase 1 deliverable
what the agents build & use
run_lap()847 laps simulated · real drift data · Hana reads actual feel, not code
get_feel_profile()live physics measurements · Paz tunes with real data
trigger_sound_event()audio latency verified · Lyra measures, not guesses
screenshot()actual frames from the running game · Vida sees the game. Not the code.
set_physics_param()live tuning · immediate measurement · change and verify in one step
how agents use it
Hana · play feel critic
“Drift exit snap at 340ms — 220ms too abrupt. Measured from 847 laps. Exact parameter attached.”
Vida · visual direction
“Screenshot at drift apex confirms correct car posture. UI contrast 2.8:1 — below spec. Fixing.”
Lyra · audio director
“All 12 events verified. Tyre screech is mono — stereo panning will improve spatial feel at speed.”
the game dev roster

Seven specialists.
Every discipline.

From play feel to audio direction, level design to balance engineering. The roles that have always been missing from AI game development.

Japanese · 花
Hana
flower
Play Feel Critic
The key agent for game projects. Reviews everything for player experience. Nothing player-facing ships without her approval.
Japanese · 匠
Takumi
artisan
Game Systems Architect
Designs game systems around how they feel to play. Thinks about the player experience first, implementation second.
Spanish
Paz
peace, equilibrium
Balance Engineer
Models game balance mathematically. Finds where difficulty causes frustration or boredom. Makes games stay fun past the first hour.
Zulu
Zola
quiet, tranquil
Level & World Designer
Designs the architecture of play spaces. Thinks about how players move through and experience the world without knowing they’re being guided.
Greek
Lyra
the lyre itself
Audio Director
Sound is half the experience. Specifies what every action should sound like and why. Designs the complete audio experience.
Greek
Clio
she who tells the tale
Narrative Systems Designer
Builds the systems that make stories work. Quest structures, branching dialogue, choice consequences. Engineers the narrative machinery.
Spanish · Slavic
Vida
life, vitality
Visual Direction Critic
Maintains visual consistency across the game. Reviews actual screenshots, not just code. Expert in game-specific UI/UX.
Activates when your
project is a game.
Any engine. Any stack.
supported engines

Your engine.
Your team.

Game Dev Mode works with any engine. Hana’s play feel reviews are based on the spec and the code, not the binary. Headless playtesting adds automated verification on top of her analysis.

Love2D
Lua · headless · recommended
Ideal for M1NIPPON and 2D games. Simple, fast iteration. Full headless playtest pipeline. Agents reason about Lua reliably.
Bevy
Rust · headless · recommended
proto.type’s own backend is Rust. The same agents building the tool are natively fluent in the language. ECS architecture maps cleanly to systems thinking.
Godot
GDScript · headless
Largest open-source engine community. Full headless mode. Strong for both 2D and 3D. GDScript is accessible to agents at all capability tiers.
Unity · Unreal · anything
any engine · any stack
All engines fully supported. Hana’s play feel reviews work from the spec and code. Headless playtesting is a bonus, not a requirement.
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created by asha.software · intentional software · built with love and respect for user privacy
花 · 桜 · 春
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