1. No, preferably. Just to keep things simple however if you're referring to other games of the same franchise/sequels I think that works!
2. "Can you instead do a two page spread too have the same topic?" Not sure exactly what your asking here sorry. Generally if its a 2 page, same as previous question, preferred about the same game to keep things simple.
3. Text Font can be whatever ya like!
4. Yes, mentions like that are totally fine, just don't show imgs of those games :)