This seems to be not-quite-correct :S. I tried F4 on my second account (with Prestige 4), and got 272 for both "Prestige 4" and "Floor 4." Then, I did F5, increasing my Prestige to 5. I re-did 4, and got 276 for "Floor 4" (and 0 for "Prestige 5", of course), 4 higher than the previous time. Everything was the same (and the dungeons were finished completely) except for the xp. Yeah, that claim isn't true. The simple fact that prestige XP increases slightly as you go up in floor-number invalidates it. Still, your observation is very odd. I did a floor today with three other people, and between the four of us we all had different prestige values. Yet all of our floor XP rewards were identical. We also had different combat levels, so if anything, only the group's average combat level seems to matter. Your floor XP rewards were identical, but your prestige values differed? That seems to confirm that combat level relative to your group's average influences this base, in addition to your combat level and the group's combat level itself. That's interesting. I'm assuming you cleared both floors under the same coniditions (both solo?, same phase of the moon, etc.). If you did, are you sure the other time was not 14 out of 16 (which I presume you are from "boxing it in" to its 4x4 grid? And if you're sure of that, I'm going to have to buy a better thinking cap >:).