What are sub games?
Those are things like romhacks, fangames, modifications, mini-games, etc; of another game.
For example, "Half-Life: Echoes" is a modification of "Half-Life", which makes it one of Half-Life's sub-games.
Those are things like romhacks, fangames, modifications, mini-games, etc; of another game.
For example, "Half-Life: Echoes" is a modification of "Half-Life", which makes it one of Half-Life's sub-games.