I've had a long-standing rule to avoid getting involved in any sort of crowdfunded activities. I didn't donate to Shadowrun or Wasteland, but I did buy and enjoy both of them (I'm plugging both of those games right now, just so you know they're good). I haven't...
If something looks like it's important, give it a tap. Chances are that it is.
You can replay the arcade games you've found whenever you want from the menu.
There's a map on most of the screens that shows you exactly where you are.