Captain America: Super Soldier is a beat-'em-up action game developed by Neversoft (now Capcom) and published under Activision’s Marvel imprint. While it received mixed reviews (often criticized for repetitive gameplay and lackluster storytelling), it remains a cult classic for Marvel fans. The game was not re-released for modern platforms or the PSP.
If you are looking for handheld superhero action on a PSP or the PPSSPP emulator , you might enjoy these existing Marvel titles: Marvel: Ultimate Alliance 1 & 2: captain america super soldier psp download link