You should make the facts disappear from the game-world after you collect them. This makes it much easier to keep track of which you have collected. Many times we we’re fooled to take the same scrolls/posters over again. We wasted some time and effort that way. The open world is huge so it’s sometimes hard to remember if you’ve been a place before. I guess you made it this way because the facts are connected to the places, objects and history of the real Jerusalem, but maybe there in stead should be a way to see this in the mobile app/ computer inventory? Some sort of screenshot/picture/map/list of where in Jerusalem you found the fact and what it’s related to there?