My friend, Daniel, has been using a brain training game that's clinically proven to increase IQ and more if done properly.
The basic game is called Dual N-Back (DNB). Below is their website link with great information and targeted games (with DNB as the foundation) http://www.IQmindware.com.
DNB is a simple game that involves remembering 2 (dual) things at a time.
Here are links for general information: dual n back research
May your brain serve you well throughout your life.