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Alien World's
A curated collection of 71 royalty-free retro science fiction sound effects designed for multimedia production
last checked Jul 13, 2026 · Timeout
CohortClass of 2026What it is
A curated collection of 71 royalty-free retro science fiction sound effects designed for multimedia production. Ideal for adding authentic vintage futuristic audio to television, film, and video game projects. Professional-grade effects ready for immediate use without licensing restrictions.
HTTP liveness
9 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 13, 2026Probe inconclusiveTimeout
- Jun 16, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
82/4 signal families
Liveness40%0.20
Press30%no data
GitHub20%no data
Tranco10%0.02
Weighted observed activity · updated Jul 15
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y