Sentence 1: Ross was really into adventure games. 
 Sentence 3: Ross played with his friend online for hours 
 Sentence 4:  Ross eventually became really good at the game 
 Sentence 5:  He was good enough to become a professional gamer 
 Option 1: His friend bought him an exclusively single-player game on Steam. 
 Option 2: His friend bought him a new shooting game on Steam.