Day of Defeat: Source Trainer

A game trainer is a software program that modifies the behavior of a video game, typically by adding cheats or altering the way the game is played. Game trainers are often used to enable players to cheat in single-player games, or to gain an advantage in multiplayer games. Some common features of game trainers include the ability to give the player infinite health, ammunition, or other resources, as well as the ability to unlock hidden levels or items in the game. Some game trainers may also allow players to modify the game's graphics or gameplay mechanics. Game trainers are typically used in conjunction with a specific game and are usually specific to that game. They are often used by players who want to explore all of the content in a game without having to play through it multiple times, or who want to test out different strategies and approaches to the game.