Time to try a game for some evening chill-out! Go to Applications->System->Software and I chose 0 A.D. (https://play0ad.com/) which from memory, is a clever Age of Empires type of clone (I think!). Anyway, it downloaded installed and looks like a success, so move on! yay!
Time to try and play a game for some R&R – I chose 0 A.D.