Official purchases support the developers at Insomniac Games so they can continue making future titles like Marvel's Spider-Man 2 . Mobile & Fan-Made Versions
Another official platform for the PC release. marvels-spider-man-miles-morales-free-download-v1-116-0-0
Some creators like R-USER Games have built small-scale "tributes" that you can try on Android, but these are not the full game and vary significantly in quality. Official purchases support the developers at Insomniac Games