When unpacking a PBP with the included Unpack-PBP tool, it outputs 'unknown.png' as 'uknown.png'. A small error, I know, but it is likely to trip people up.
Never underestimate the power of tradition. That and maybe no one really cared.
But I am just taking a stab, since I don't know what kind of answer you are expecting in return. Are you expecting a serious response, or was that just a snide comment masquerading as a n00b question ?
pic1.png is a different picture. You probably mean "pic0.png", which is the name that it logically ought to have, although I don't know if anyone has verified that this is the "real" name. (Just plonking a "pic0.png" into a savegame diectory does not seem to have the desired effect.)
Flying at a high speed
Having the courage
Getting over crisis
I rescue the people