Simplify the following text for a Grade 2 native English-speaking person.
Original: It contains enhanced remakes of Super Mario Bros. , Super Mario Bros. : The Lost Levels ( Japanese : Super Mario Bros. 2 ) , Super Mario Bros. 2 ( Japanese : Super Mario USA ) , and Super Mario Bros. 3 .
Simplified: The four games are Super Mario Bros. , Super Mario Bros. 2 , Super Mario Bros. 3 , and Super Mario Bros. : The Lost Levels .