Usagiengine

Usagi is a free and open source game engine for making pixel art games coded with Lua. It features live reloading of code and assets during development and cross-platform export in a single command.

Added May 19, 2026 · Last analysed May 19, 2026 · via Hacker News · 67% unique tagline

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StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 19 May 2026; the live site may have changed since.

Usagiengine still has work before launch. Visible gaps: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on May 19, 2026. The site is hosted on Deno Deploy, with a domain registered 3 weeks before launch. The crawl picked up 3 technologies on this site, covering backend framework, DNS providers, and hosting. The stack includes Deno Deploy, Deployd, and DNSimple.

For context, it's one of only 14 launches we've crawled running Deno Deploy.

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2.3

StackScope Score

Poor

82/100 Launch Readiness

Well prepared

0/6 Security Headers

Poor

0/3 Legal

Missing

0/2 Crawl files

Missing

Vibe Score 5 · Few AI signals

How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (3)

Infrastructure

DNS	DNSimple
Hosting	Deno Deploy

Other

Backend framework	Deployd

Infrastructure

Network

DENO - Deno, US

AS15329 · US

DNS

DNSimple

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

Green hosting

Not green hosted

No green-energy record. Data from The Green Web Foundation.

SSL Certificate

Let's Encrypt

Valid 1 May 2026 to 30 Jul 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

2 months

Registered Apr 2026 · Tucows Domains Inc.

Email Security

✗

SPF Not published. Your domain can be spoofed in phishing emails.

DKIM Not detected at common selectors. Your provider may use a custom one.

✗

DMARC Not published. Receivers fall back to permissive defaults.

MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.

TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

✓ Custom title and meta description

✓ Open Graph tags (title, image, description)

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

⚠

Meta description is 198 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Localhost / private-network references (-10 points) Site references http://localhost or private-network URLs (e.g. 192.168.x.x) in asset tags. These will fail to load for public visitors.

- Twitter card meta tags

Vibe Score Breakdown How?

Signal	Points
AI writing signals	+5

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

No AI stance declared

✗ llms.txt published

✓ No AI bots blocked in robots.txt

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✗ robots.txt

✗ sitemap.xml

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

? Terms of Service not detected

Detection works best on English language sites.

Security Headers (0/6)

✗

Referrer-Policy

✗

X-Frame-Options

✗

Permissions-Policy experimental (check browser support)

✗

X-Content-Type-Options

✗

Content-Security-Policy

✗

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Performance

133ms response time

Faster than 86% of sites

1 third-party domains loaded

Build

0 JS files

0 CSS files

1 Third-party domains

Brand Colours

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