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Entre Ruídos

Entre Ruídos is a blog for readers drawn to mysteries, urban legends, unexplained cases, and internet phenomena. Each story is presented with context, origins, competing accounts, and clues, separating what is documented from what remains a hypothesis.

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Fliperama escuro dos anos 1980 com gabinete preto sem identificação, tela vetorial ciano e luzes vermelhas ao fundo.
Urban Legends19/09/20265 min read

Did Polybius exist? The first verifiable record of Portland's secret arcade legend

The documentary trail for Polybius begins long after 1981. See what Coinop, GamePro, and later records actually establish about the legend.

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Livro antigo aberto com ilustração de uma cigarra e o número 3301, cercado por códigos, lupa, computador com mensagem PGP e mapa ao fundo.
Internet Phenomena19/09/20267 min read

Cicada 3301: what was actually solved and why Liber Primus remains open

The public Cicada 3301 paths have been widely reconstructed, but 56 of the 75 Liber Primus pages still have no accepted solution.

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Dois televisores CRT exibem uma figura mascarada inspirada em Max Headroom em uma sala retrô, com interferência de vídeo e o skyline noturno de Chicago ao fundo.
Cases & Mysteries19/09/20267 min read

Max Headroom hijacking: how two Chicago TV stations were seized in 1987 and why no one was identified

Two Chicago stations had their signals taken over on the same night in 1987. See the timeline, the likely microwave technique and what remains unproven.

Read article
Fliperama escuro dos anos 1980 com gabinete preto sem identificação, tela vetorial ciano e luzes vermelhas ao fundo.
Urban Legends19/09/20265 min read

Did Polybius exist? The first verifiable record of Portland's secret arcade legend

The documentary trail for Polybius begins long after 1981. See what Coinop, GamePro, and later records actually establish about the legend.

Read article
Livro antigo aberto com ilustração de uma cigarra e o número 3301, cercado por códigos, lupa, computador com mensagem PGP e mapa ao fundo.
Internet Phenomena19/09/20267 min read

Cicada 3301: what was actually solved and why Liber Primus remains open

The public Cicada 3301 paths have been widely reconstructed, but 56 of the 75 Liber Primus pages still have no accepted solution.

Read article

Cases & Mysteries

Documented cases, clues, competing accounts, and questions that remain open

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Dois televisores CRT exibem uma figura mascarada inspirada em Max Headroom em uma sala retrô, com interferência de vídeo e o skyline noturno de Chicago ao fundo.
Cases & Mysteries19/09/20267 min read

Max Headroom hijacking: how two Chicago TV stations were seized in 1987 and why no one was identified

Two Chicago stations had their signals taken over on the same night in 1987. See the timeline, the likely microwave technique and what remains unproven.

Read article

No articles published yet.

Urban Legends

Stories that circulate across cities, generations, and communities

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Fliperama escuro dos anos 1980 com gabinete preto sem identificação, tela vetorial ciano e luzes vermelhas ao fundo.
Urban Legends19/09/20265 min read

Did Polybius exist? The first verifiable record of Portland's secret arcade legend

The documentary trail for Polybius begins long after 1981. See what Coinop, GamePro, and later records actually establish about the legend.

Read article

No articles published yet.

Internet Phenomena

ARGs, hoaxes, forums, viral stories, and puzzling digital traces

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Livro antigo aberto com ilustração de uma cigarra e o número 3301, cercado por códigos, lupa, computador com mensagem PGP e mapa ao fundo.
Internet Phenomena19/09/20267 min read

Cicada 3301: what was actually solved and why Liber Primus remains open

The public Cicada 3301 paths have been widely reconstructed, but 56 of the 75 Liber Primus pages still have no accepted solution.

Read article

No articles published yet.

About Entre Ruídos

Entre Ruídos explores stories that live at the edge of record, memory, and speculation. The blog covers mysteries, urban legends, unexplained phenomena, lost archives, and events from digital culture, tracing early sources, later versions, and the questions that remain unresolved. Its approach preserves the atmosphere of mystery without presenting hypotheses as facts.

Responsible: Núcleo de Mistérios e Fenômenos