You may notice up to six log files in the folder. GearCity creates a new log file every time you open the game. The program retains old log files for up to five sessions. Old log file names contain the number of gaming sessions ago you played. Take Logfile_3_SessionsAgo.log as an example. This file is from three gaming sessions ago. If you open the game again, Logfile_3_SessionsAgo.log will become Logfile_4_SessionsAgo.log. And Logfile_5_SessionsAgo will be deleted from your system. When in doubt, just send them all.