Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add TabooHarmony/roblox-brain --skill roblox-game-designgit clone --depth 1 https://github.com/TabooHarmony/roblox-brainWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/tabooharmony/roblox-brain/roblox-game-design)<a href="https://agentmods.dev/skills/tabooharmony/roblox-brain/roblox-game-design"><img src="https://agentmods.dev/badge/skills/tabooharmony/roblox-brain/roblox-game-design/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/tabooharmony/roblox-brain/roblox-game-design"><img src="https://agentmods.dev/badge/skills/tabooharmony/roblox-brain/roblox-game-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00037 | $0.00686 |
| Opus 5.5 | $0.00015 | $0.00274 |
| Sonnet 5.5 | $0.00007 | $0.00137 |
| Haiku 4.5 | $0.00004 | $0.00069 |
Grade A, and why
roblox-game-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Roblox Game Design Fundamentals
When to Load
Load for the structural craft of a Roblox experience: core loop and meta-game architecture, tutorial/FTUE structure, level design, economy design, retention-phase planning, juice/game feel, Bartle balance, grind avoidance, Today's Picks or Moments readiness. Route elsewhere: metrics/discovery → roblox-growth-design; persuasion/pricing → roblox-player-psychology; VFX → roblox-animation-vfx; economy telemetry → roblox-analytics.
Quick Reference
- Core loop first: three layers must each work: core loop (moment-to-moment), meta-game (hour-to-hour), long-term progression (day-to-day). If the raw actions aren't fun, nothing above them survives.
- Retention phases: D0–7 understandability/novelty/stability → D7–30 progression/mastery/return triggers → D30–90 social comparison/LiveOps → D90+ community.
- Teach invisibly: teach through experience, never popups; environmental teaching, dynamic UI, kinesthetic learning, show don't tell, inverted pyramid of complexity.
- Levels: Kishōtenketsu (safe intro → develop → twist → conclusion) plus the invisible hand (coins/lighting guide without text) and fairness (deaths feel the player's fault).
- Economy: every source needs a sink; soft/hard/social currencies; prices must scale with the power curve; watch hoarding, churn at choke points, currency devaluation.
- Anti-grind: grind is a state of mind, not a mechanic. Fix with juice, skill ceilings, and measurable chunks.
- Bartle: Achievers/Explorers/Socializers/Killers form an ecosystem; over-serve one and the others leave.
- Field data: measured onboarding/monetization/retention numbers (2026; see full.md).
Full framework details, checklists, case studies (Stardew, Hades, Artifact), and the curation/Moments prep: references/full.md
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago Changed · +1 lines 88a83481d124
- 28d ago Changed · -1 lines b60aaff7893f
- 1mo ago First seen · 35 lines · 37 tokens per session scan A 0372c21ca254
roblox-game-design is a skill published in the GitHub repository TabooHarmony/roblox-brain (124 stars, last pushed 9d ago), licensed MIT. It adds 37 tokens to every session and 686 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-24.
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