How do we zoom in and save in this new app, it used to be a button at the bottom when you where in the gamer app and looking at photos you just took
Yes, you're talking about the "Reframe" function, right? I noticed this is gone as well in Lumia Camera 5. You can still use it in "Lumia Camera Classic", but all it is really, is just cropping the picture. As long as you're using the high res version of the image, I think you get the same effect by selecting "edit", then the "crop/rotate/auto-fix" option.
The "Reframe" thing was big with the 1020 release, and it's huge images. Sometimes, I'll just cheat and zoom in on a pic (by pinch/unpinching) and taking a screenshot of the zoomed in image.