google 'epsxe apk'.
theres handful of android app sites out there(apk4fun, apkmaniafull, etc) that give dl links to full version of android apps.
been a epsxe user for two years now. natapos ko na ulit suikoden 1&2.
i suggest buying those physical controllers to fully enjoy the ps gaming experience. mahirap ang l1,l2,r1,r2 buttons sa on screen controller e.