Normally there is a place in-game where you go to save your game in each town. However with Sega Forever the emulator is kind of stupid. First I'd tap Settings on the openign screen then Google Play...After you sign in just play the game as normal until you get to control Rolf. Go northwest to the upper left and you have your save station. Its a little dumb how they did it in SEGA Forever but they're mobile cash grabs at most.