In the future world, virtual reality technology is highly developed, and a game called "Cyber Delta" is popular all over the world. After players enter the game, they venture into a huge virtual world full of cyberpunk style. In the game, players can form teams to search for supplies and fight other players or AI. After successfully evacuating and bringing out supplies, they can be sold into credits. These credits can be used with real money. There are prosperous cities and slums in the game world. The distribution of materials and the degree of danger in different areas vary.