You can enable flying
There are no secret cars
yes
u can go to liberty city
no no photos need to be saved. around san Andreas there are several secret photos called snap shots
Collect or find secret codes!!
you have to collect all of the artifacts.
for gs secret mission collect needed items
secret 3 is a cartoon works screensaver you can collect if you finish the all the levels in the cutting room
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you have to collect all 9 pieces of the secret laboratory map pieces
Search for the Secret Keys
All secret stars.All secret stars appear if you collect 100 coins in all 15 courses.If you collect 120 stars then a cannon will appear in a hole jump in the hole aim for the top of the castle and you see yoshi.Talk to him and he will give you 100 lives and there's also a secret there.There will be a ? box there use it with a certain character and a special secret will be revealed.