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UltimateXO
UltimateXO is a browser‑based implementation of the Ultimate Tic‑Tac‑Toe variant
verified Aug 24, 2026 · HTTP 200
CohortClass of 2026What it is
UltimateXO is a browser‑based implementation of the Ultimate Tic‑Tac‑Toe variant. It’s open‑source, allowing anyone to host or modify the game for free.
HTTP liveness
2 probes since Aug 17Aug 17Aug 24
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Aug 24, 2026Back onlineAlive · 200 OK
- Aug 17, 2026First probe — unverifiedTimeout
Discussion 0 comments
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Pulse Indexobserved activity
2 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
3,100 products launched in 2026 · 100% still active
3,100 active0 sunset
Still active
100%
Median lifespan
4.9y