Grafomap - A map poster of your favourite place on earth
Brain Games - Boost memory power with free brain games
TiltMaps - Create map posters of your favorite places & memories.
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
Craft & Oak - Beautiful, minimalistic custom map posters
Pixelogic - Daily Picross - Nonogram logic game with 5000+ puzzles and a daily puzzle