LaserTag is a modern take on traditional catch and hide or cops and robbers. As a rule, the game is played in a laser tag hall, which can be designed differently depending on the provider. The design of the hall is abstract and bears no relation to real places.
Each player receives a LaserTag vest, which is put on like a jacket. The game requires a minimum of two players, but up to 80 people can play simultaneously in a laser tag hall, depending on the provider.
Because LaserTag is an electronic game, the game objectives can be adjusted to suit the age of the players and their desires. Before the game, the rules and how to use the equipment are explained to the participants in a detailed and easy-to-understand briefing.
Once the game begins, players must complete the given objective, either as a team or as individuals. When players from competing teams meet, they can "tag" each other with an infrared marker to disable the other player's LaserTag vest. The tagged player can then not actively participate in the game for 5 seconds, which gives him enough time to hide inside the hall. The game then automatically continues for this player.
Lasergame is basically the same as LaserTag and is often used as a different spelling or regional language variant. However, the term is also sometimes used to describe a game where you have to navigate a course of laser beams without involving any other players or laser tag equipment.
Lasertec and Lasertech basically means the same as LaserTag and is often used as an alternative spelling. The terms can be used interchangeably to describe the game in which players with laser tag equipment compete against each other.
The term "laser tagging" basically means the same as "playing laser tag". It's just a different spelling for the game that pits players against each other with laser tag equipment.