The Pack-a-Punched Weapon Mystery Box is a utility that was supposed to be featured in the Spacefront storyline, but it was removed because the creator of the storyline felt it made the maps too easy, and that there would be no need for a Pack-a-Punch Machine.
The Pack-a-Punched Weapon Mystery Box's appearance has the same layout as the regular Mystery Box, but it is purple with elaborate engravings, just like any upgraded weapon. It costs 5950 points to use. When activated, it goes through the same cycle as the regular Mystery Box, but when the final weapon appears, it is an upgraded weapon. The odds of obtaining a wall weapon are much greater than obtaining a Mystery Box-only weapon. Because of this, the Pack-a-Punched Weapon Mystery Box is a gamble and possible point waster.