Annual puzzle competitions/armchair treasure hunts:
Seasonal
- MUMS (May)
- CiSRA (May/June)
- SUMS (August)
- Labor Day Extravaganza (First Monday in September)
- Logica Armchair Treasure Hunt (December – January)
Web-based
- Ouverture Facile
- Tenth Leaf (Chapters 1 and 2 available)
- Fandango
- Vegas Die
Book-based (current)
Location-based
Useful forums
- Tweleve
- Q4T
- Armchair Treasure Hunt Club