Ok, so I'm working on a game called dasenull, a top-down (bullet-hell-ISH) shoot-em-up game. My struggle is how im gonna turn this into an adventure game. Should I make it so you can choose which level you do? for example:

                   L2      L2
                       \       /

                          L1

or should I just create an entirely new game? I'm more leaning towards the optional level system because I don't know if I have time.

Let me know what you think please!

I say optional lvl system unless you got the skill to make a game in 5 days