Ace Combat 3: Electrosphere is a combat flight simulation video game developed and published by Namco for the PlayStation. The third game in the Ace Combat franchise, it was released in Japan in 1999. Players control an aircraft and must complete various mission objectives, such as destroying squadrons of enemies or protecting a base from enemy fire. Electrosphere carries a more futuristic science fiction-inspired landscape and world compared to the modern-day theme of its predecessors. The japanese version of Ace Combat 3 differs significantly from the international release: its campaign features 52 missions split among different paths depending on in-mission decisions. The story centers around the "Intercorporate War" in 2040 between Neucom Incorporated and the General Group.