No specific info about version 5.1. Please visit the main page of LignUp Stamps Multi Collector on Mac Informer.
Play minigames like puzzles and hidden-object games to unlock items.
It provides a very nice and useful collection of stamps for Tux Paint software.
In this game you explore gorgeous Hidden Object scenes and save the children.
It is a stamp identification and valuation application for the true philatelist.
Welcome to a town where something that should not exist runs free