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Knockout-game

Show HN: Knockout -A multiplayer 3D browser game built with Three.js

Games

Added May 25, 2026 · Last analysed May 25, 2026 · via Hacker News · 58% unique tagline

Own this Launch?
Screenshot of Knockout-game

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 25 May 2026; the live site may have changed since.

Knockout-game is early-stage. Main gaps: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on May 25, 2026. The site is hosted on Fly.io. We've detected 6 technologies on this site, covering analytics, backend framework, web fonts, and hosting. The stack includes Express, Fly.io, and Google Fonts.

It's one of 89 launches on this exact stack.

If you own this site, refresh the snapshot and see the full fix list any time →

0.8
StackScope Score
Poor
29/100 Launch Readiness
Needs work
0/6 Security Headers
Poor
0/3 Legal
Missing
0/2 Crawl files
Missing
Vibe Score 30 · Some 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 (6)

Infrastructure
Hosting Fly.io
Build & Framework
Font Google Fonts
Package CDN unpkg
Analytics & Marketing
Analytics PostHog (4)
Social Vibe Coding Game Jam
Other
Backend framework Express

Infrastructure

Network
FLY - Fly.io, Inc., US
AS40509 · US
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 22 Apr 2026 to 21 Jul 2026
Certificate as captured in this snapshot, not a live check.

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 (5)

Cookies (1)
NameLifetimeDetected as
ph_phc_rePWcBopVBQuZABHh3tEfHLNahFzQneNRRKWcX3tkVqj_posthog 12mo PostHog
Local storage (1)
KeySizeDetected as
ph_phc_rePWcBopVBQuZABHh3tEfHLNahFzQneNRRKWcX3tkVqj_posthog 1.4 KB PostHog
Session storage (3)
KeySizeDetected as
ph_phc_rePWcBopVBQuZABHh3tEfHLNahFzQneNRRKWcX3tkVqj_posthog 388 B PostHog
ph_phc_rePWcBopVBQuZABHh3tEfHLNahFzQneNRRKWcX3tkVqj_primary_window_exists 4 B PostHog
ph_phc_rePWcBopVBQuZABHh3tEfHLNahFzQneNRRKWcX3tkVqj_window_id 38 B PostHog

Readiness Breakdown How?

⚠
Custom title and meta description (partial) missing meta description
✓ Responsive viewport meta tag
- Open Graph tags (title, image, description)
- Canonical URL declared
- Twitter card meta tags
- Favicon present
- Semantic HTML (nav, main, article)

Vibe Score Breakdown How?

SignalPoints
AI palette signals +5
AI writing signals +5
AI CSS signals +15
AI code-structure 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
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
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

86ms response time
Faster than 96% of sites
5 third-party domains loaded

Build

✓ Code splitting
12 JS files
2 CSS files
5 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.