Codebreaker HQ
Spy agency: crack intercepts and decrypt the secret message
- Letter Codes
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Sail from Harbour Isle to Lighthouse Rock through five channels of word questions. Each right answer fills the sail and carries the boat to the next buoy, and three in a row catches a trade wind that opens a treasure crate of shells.
Included in every Prep4All plan. Codebreaker HQ is free to try first.

Island Hopper is a voyage across six islands, from Harbour Isle to Lighthouse Rock. A round is 16 questions over five sea channels, and each channel leans on one topic while mixing in the rest: synonyms and antonyms, word pairs, completing a word pair, odd ones out and word connections. The last crossing is the Storm Channel, with four harder questions, extra time and extra shells.
Quick answers win bonus shells, but no question ever times out. A wrong answer is a wave that pushes the boat back half a buoy and the trap is explained, and the tide still carries you to each island. The ship’s log at the end goes through every trap with a worked answer. Clear the Storm Channel with 13 or more right to unlock the Sunset Isles, sailed at golden hour.
Closest and opposite meanings, words made in the same way and odd two out are all among GL Assessment’s 21 verbal reasoning question types.
Questions from the game, for you to try together. Have a go before opening the answer.
Which word is closest in meaning to ‘permanent’?
lasting — Permanent means meant to stay for ever, so the closest word is lasting.
Which pair of words is linked in the same way as ‘envelope’ and ‘paper’?
crayon and wax — An envelope is made of paper, and a crayon is made of wax: the same link, in the same order. The answer is crayon and wax.
Find the word that completes the third pair in the same way as the first two pairs. SCREAM → CREAM FACTOR → ACTOR ORANGE → ?
RANGE — The rule is: drop the first letter. SCREAM becomes CREAM, FACTOR becomes ACTOR, so ORANGE becomes RANGE.
Spy agency: crack intercepts and decrypt the secret message
Detective agency: three cases, an evidence board and the final deduction
Archery tournament: four ends, wind challenges and a podium
Every game, every level and the daily challenge are included in every Prep4All plan, with lessons, practice tests and mock exams. Every plan starts with a 7-day free trial.