Lets talk about Mega Man Powered Up PSP

In this classic 2D side-scroller, players take on the role of Mega Man as he
slides, shoots and jumps his way through a variety of themed stages, ultimately
facing off against a menacing boss character for each. Stages can be selected in
any order and can be retried as many times as possible. Actions, moves and
weapons earned in areas can be strategically used to finish others and will also
provide access to previously inaccessible sections of levels players have
already beaten.