>Version 4.1 can read other level sets as well. You can get other level sets by going to the Laser Tank web site:
> Currently, I have version 4.1 which has 2030 levels. Where is a link for a version that has more levels?
http://perso.cgocable.ca/lasertank/ltank_en.html
Then click "New Levels & High Scores" in the menu on the left. Then click "All the levels, GHS & Reports in one zip file" to download Updates.zip. Updates.zip contains a lot of other level sets: Beginner-I, Beginner-II, Challenge-I, Challenge-II, Challenge-III, Challenge-IV, Gary-I, Gary-II, Sokoban-I, Sokoban-II, and Special-I, in addition to LaserTank. Put Updates.zip in your LaserTank folder. Although you can just unzip Updates.zip, I prefer to use a program called LTUpdate.exe to process it, which will reset local high scores if a level has been changed. That program can be downloaded from the Laser Tank web site by clicking "DownloadLaserTank Update Levels and High Scores Utility" from the same place you downloaded Updates.zip. To load a different level set in the LaserTank program, press the "O" key or click Game->Open Data File. Then select the level set you want to use.