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Thunderbirds Wiki

"Endgame" is the 11th episode of Thunderbirds Are Go! season 3. It premiered on May 25, 2019, in the UK.


Kayo, with the help of a futuristic game creator that only talks like a wizard, must play through a futuristic holo-game called Cavern Quest to stop the Chaos Crew from stealing a powerful piece of technology - the Holotrix.


Regular Cast

Guest Cast


Kayo: "Clock's ticking. Please tell me you can read that?"
Alan: "No problem. I've been stuck in this cave so many times, I can read every language from Argdal to Zilibish."

Kayo: "We should stop in and play some time."
[Mini-MAX passes the virtual reality goggles to Alan]
Alan: "Hold on, fun? Play? Do you hear the words coming out of your mouth?"
Kayo: (gets the goggles from Alan) "I can't be the serious one all the time... Alonius."

International Rescue Equipment Used

Non International Rescue Equipment Used



  • This episode features elements adapted from the original Thunderbirds episode The Uninvited.
  • This is the second episode to feature Alan onboard Thunderbird 5 but the first time he is on board with John.
  • John is seen performing monitor duty on Tracy Island for the first time in this episode.
  • This is the first episode where more than one person rides Basher.