Simplify the following text for a Grade 4 native English-speaking person.
Original: Many elements in Super Mario Bros. 2 stayed for the game 's sequels and related games in the series . The game added the ability to pick up and toss enemies and objects , a move that has become part of Mario 's permanent repertoire , appearing in other Mario games including Super Mario Bros. 3 , Super Mario World , Super Mario 64 , Super Paper Mario , Super Mario Sunshine , New Super Mario Bros. , New Super Mario Bros. .
Simplified: Super Mario Bros. 2 is the second game of the Mario series .