The setting of Delta Force is inspired by the real-life U.S. Army Special Forces - Delta Force - which are known worldwide for their extreme training, stealthy operations and superior combat skills. The game faithfully restores this spirit, emphasizing sneaking, precision strikes and teamwork rather than pure firepower suppression. Here, the player takes on the role of an unsung hero who needs to carry out a series of difficult secret missions around the world, from rescuing hostages and destroying enemy facilities to scouting for enemy intelligence and stopping terrorist attacks, every action is a matter of life and death and honor.

Different from the popular linear shooters on the market at the time, Delta Force pioneered the concept of large-area terrain combat. The game uses the Voxel Space engine to create rolling mountains, open deserts, jungles, and urban ruins. Players are no longer confined to narrow corridors or a single scene, but rather choose their own attack routes and tactics on the vast battlefield. This freedom brings an unprecedented level of immersion and makes every battle full of unpredictable changes and challenges.

In terms of combat experience, Delta Force emphasizes realism and tactics. Bullets do not have a “lock-on” mechanism and need to be precisely targeted based on distance and ballistic drop; enemies do not just charge, but use the terrain to cover and organize counterattacks. A rash exposure is likely to incur accurate enemy sniping; and calm reconnaissance and reasonable tactical deployment, often with the minimum cost to win the victory. This intense and intelligent gameplay has brought players a great sense of accomplishment and has cultivated a generation of players who are fond of tactical shooting games.

Delta Force also strives for excellence in mission design. Each mission has a detailed combat briefing, including terrain analysis, enemy intelligence, operational objectives and exit routes. Based on this information, the player needs to formulate a plan of action, such as prioritizing the removal of sniper threats, secretly infiltrating enemy camps, and setting up ambushes to annihilate patrols. Because of this, every mission in Delta Force is a test of skill and intelligence.

In addition to the single-player campaign, Delta Force's multiplayer mode is one for the ages. It supported large numbers of players against each other online at the same time, with huge, open maps that offered a variety of modes such as teamwork, possession, and demolition. This early large-scale battle experience laid a solid foundation for later tactical shooting MMOs, and made Delta Force extremely popular in the LAN battle scene at the time.