LogicLike - Improve logical thinking through engaging brain games
JobFlare - Brain games for job seekers
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
Hue Brain Games - Play interactive games with your Philips Hue lights
AlphaBetty Saga - AlphaBetty Saga is a single-player game developed for Android.
LeveLisa - The brain game that creates creativity