- Alex's Adventures In NumberlandAlex Bellos
- Here's looking at EuclidAlex Bellos
- FutebolAlex Bellos
- Alex Through the Looking-glassAlex Bellos
- Puzzle NinjaAlex Bellos
- Can You Solve My Problems?Alex Bellos
- Soccer School Season 3Alex Bellos, Ben Lyttleton
- Soccer School Season 1Alex Bellos, Ben Lyttleton
- Football School Season 2Alex Bellos, Ben Lyttleton
- Language Lover's Puzzle BookAlex Bellos
- BrazilAlex Bellos
- So You Think You've Got Problems?Alex Bellos
