A brain made of colourful puzzle pieces

Keep your mind fresh, sharp and busy.

Puzzles and brain training in large print – for everyone from rotary phones, tape recorders and black-and-white TV all the way to today’s smartphones. Keep your mind fresh, sharp and busy: print a page, grab a pen, take your time.

Would you like to try?

A brain made of colourful puzzle pieces, one piece floating free
Try some puzzlesFree to print, no sign-up needed.Join the clubNew puzzles regularly in your inbox.Booster sessionsHave the book? Here is your extra.Our booksScience-based brain training and puzzle books.

Why the Theo Thinker Club?

  • Puzzles made for seniors and tested with seniors – our own parents first.
  • Large print, clear layouts, an answer key for every puzzle.
  • Print and play – no computer needed while you solve.
  • Carefully checked facts. You learn something new along the way.
  • Made by a small team of writers, doctors and puzzle fans.

Six skills, one brain

Long-term memory
Short-term memory
Multitasking
Logic
Speed
Detail

Who is it for?

At home

For you, your parents or grandparents. Print a page, grab a pen, take your time.

Our books →

Therapists & caregivers

Ready-to-print pages for your clients – at their homes or in your practice.

More information →

Senior communities

Ready-to-print activities for senior living, senior centers, day programs, libraries and faith groups.

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Join the club

Tell us your name and email and we will send you a new puzzle to print every now and then – word searches, brain teasers, surprising facts. Free, and you can leave any time.

By clicking the button you agree that we email you puzzles and news from the Theo Thinker Club. Unsubscribe at any time with the link in any email. Privacy Policy

Our books

Book cover: A Complete Brain Training Program for Seniors · 12 Weeks

A Complete Brain Training Program for Seniors · 12 Weeks

Based on scientific research, for everyone born 1945–1960 who grew up in the ’60s and ’70s. Twelve weeks of memory, logic, speed, detail and multitasking exercises, in large print.

Comes with free Booster Sessions

See our books in detail →

How Theo Thinker began

Theo Thinker began at a family get-together, talking about how to keep our parents fresh, active and curious. So we made them homemade puzzles, brain teasers and crosswords. They loved them, and soon they were asking regularly: “What has Theo Thinker prepared for us today?” Before long, friends wanted copies for their parents too – and the idea of books and a club for anyone who wants to keep the mind fresh, sharp and busy took shape.

More about the club and the team →