Simplify the following text for a Grade 5 native English-speaking person.
Original: Pac-Man is an arcade game developed by Namco and licensed for distribution in the United States by Midway , first released in Japan on May 22 , 1980 .
Simplified: Pac-Man is an arcade video game that was made by Namco . It was released in 1980 , and became very popular in the history of games .