The leaker in question is Mach1bud, and he claims that Rockstar will use the RAGE engine, which they used for GTA V, to remake GTA III, GTA Vice City and GTA San Andreas. Let's cut right to it here: It all took place on the GTA Forums. Now, an insider leaker claims he knows the games will be remade with the GTA 5 engine. Rumors about a GTA San Andreas, GTA III and GTA Vice City remaster or remake have been super persistent and are not going to go anywhere until the games release.