Rocket League has helped me so much through this period of my life. I use to play more complex video games, but with the lack of brain power and motivation Rocket League is one of the few games I can play consistently. I recommend it to anyone looking for a fun game you can join and don’t need to spend to long getting good at.
Another fun game for iPhones that requires very little brain power is Rider.
https://itunes.apple.com/us/app/rider/id1229618961?mt=8
If anyone has other games that are very simple to play, please share!