[@Girlie1Bomba] Heya thanks! Great questions!

-We are to be humans with regular human abilities i.e. no magic/superpowers?
[indent]Yep, humans with no abilities! HOWEVER, maybe I'll add a line to the character app -- you will get lots of opportunities to GAIN superhuman abilities, and certainly you could pick what sort of abilities you'd like to obtain![/indent]

-What is the upper most equivalent technology 'era' available?
[indent]Let's say Renaissance era -- clocks and pocket watches, and gadgets and contraptions, but not steam or factories. If you have an idea, of course, let me know![/indent]

-Are we shipwrecked survivors on the island with only the clothes on our backs to begin with?
[indent]The clothes on your backs and whatever you happen to have on your person. If you'd like something else to wash up ashore, we can negotiate. ;)[/indent]

-And most importantly: Can we be of peak human strength, agility, endurance, reaction time, genius level intellect, trained in almost all forms of martial arts (including ninja 9000+ steath), full acrobatics level gymnast, so rich that we can manufacture almost any gadget that will be advantageous and provide utter victory given enough time to prepare for the situation, and called upon by a symbol in the sky? ;PP But seriously, how close to BatSue can we make our Charas?
[indent]Anything that's physically feasible is ok -- but it won't help you, so the effort would be a waste. The PCs will already be more important, more powerful and more advantageous than any native of the island, even if the PC is a shy child with no skills whatsoever. They're already special. Being rich also won't help you here, since people barter and don't bother with gold or gems -- but you're free to make a PC who has been as rich and powerful as you want. ;)[/indent]