Scene Select

Just a heads up since it seems that folks are being told there is none...

Click on the options (gear icon) and the first scene is the one that lets you select previously unlocked content. Click it and then left and right arrows move between unlocked scenes.

You have to have played a scene or have started it to have access to it in that menu.

I haven't played the game yet, but I assume this is for going back to grab missed achievements? Like a chapter select.

I'll probably pick this up soon as a GTASC game.