It is a category that introduces sound effects and SE materials that are expressed by the onomatopoeia of "Gattan". In this category, there are a wide range of free sound effects that are expressed as "Gattan", "Bottle, Around, Gattan", "Battan" and so on. I think that you can use it in various scenes, but as an example, it can be used as a sound when a door slams, a sound when an object falls, or a sound effect when a train door opens. You can use it for the commuter train scene in anime, simulation games and novel games. Besides that, it can also be used for sound effects when something such as a bottle falls in games and animations, RPGs, horror games, and scenes where heavy doors are slammed in scenes that are tense in action games. It may be good when expressing a sense of tension. If you are looking for sound effects free material of "Gattan", you can search from this category if you are doing video production such as various videos and programs, game production and application development.