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Deduction
4 apps to play — grouped by age.
🎒 Ages 9–14 · Grades 4–8
LatticeForge
Ages 9–13 · Gr 4–8 Level 3
Every grid hides one rule — find it, and the cells fall into place. Sudoku + a number-logic puzzle guild.
Play LatticeForge →
JigsawForge
Ages 9–13 · Gr 4–8 Level 3
The mystery none of you can solve alone, for ages 9–14. Four detectives each hold a different kind of evidence — the map, the ledger, the witness notes, the timeline — and the case cracks only when you POOL your clues on a shared board. Talk in clues, not chat (no typing). Play solo (all four roles) or pass-and-play with 2–4 friends. Cooperative deduction where teamwork is the whole point.
Play JigsawForge →
DeduceQuest
Ages 9–12 · Gr 4–7 Level 3
Deduction & code-breaking — crack a hidden colour code, solve nonograms and logic grids, and guess the hidden rule, all framed as predict-observe-explain. A wrong guess isn’t a miss, it’s a clue.
Play DeduceQuest →
LogicQuest
Ages 11–13 · Gr 6–8 Level 4
Crack cases in Fallacy Detective, build truth tables in the Logic Lab, judge syllogisms with Venn diagrams, map an argument into claim, premises and objections, and deduce a classic single-solution Logic Grid — plus 16 kits of critical thinking. Inspector Logos coaches, never tells.
Play LogicQuest →