The company took the game fortress night developed by Epic Games off the shelves, making it impossible for global users to download the game. If the conflict between the two companies escalates further, it may affect the development of hundreds of games around the world. “If Apple disallows the epic developer account, it will make it impossible for epic to maintain the unreal engine, a game engine suitable for iPhones and other apple devices, so that games developed with unreal engine cannot be updated,” Epic Games said in a document submitted on Monday. < / P > < p > the company also said that apple is likely to refuse to accept updates to existing applications developed with Unreal Engine and to launch new applications developed using unreal engine before the spring of 2021, which will lead to a loss of developers who will seek other cross platform game production engines supported by Apple devices. “Apple wants to keep epic and its apps in Apple store as much as possible, but only if they submit a new version of the app to comply with apple mall’s policies,” Apple said in a statement late Monday. Apple treats all companies equally, without exception, because we can’t put the business interests of Enterprises above the interests of users’ protection, which is not correct. ” < / P > < p > although there are more developers using unreal engine in host games and PC games, the majority of mobile game developers use this engine to develop games on mobile platforms, and unity is another engine for most mobile game developers. “It’s still hard to assess whether the lawsuit with Apple will affect epic’s revenue, and unreal engine’s market share in mobile games is much smaller than unity,” said Michael pacer, an analyst at wedbush, a brokerage However, industry insiders say that if unreal engine can’t be updated on Apple devices, it will still have a certain impact. < / P > < p > “although it seems that there are not many games developed with Unreal Engine on the mobile phone platform, if unreal really can’t continue to run on Apple’s devices, the result must be a double loss.” “But the final direction of the lawsuit is still difficult to judge, both sides are relatively strong.” < / P > < p > on Friday, Epic Games updated the fortress night feature, allowing players to pay epic directly with their credit cards to buy digital character clothing and other digital goods, and to enjoy discounts. This was a violation of Apple’s Mall policy, and apple pulled “Fortress night” off the shelves within hours. < / P > < p > epic is ready for a long fight. The company immediately launched a counterattack and sued apple for anti competitive behavior. On Monday, Epic Games filed a second filing with the court, claiming that apple not only threatened to delete fortress night, but also to completely ban Epic Games as the account of Apple mall developers. < / P > < p > “this approach is disastrous.” Tim Sweeney, founder and CEO of Epic Games, said, “if epic does not have access to Apple’s SDK, API and other tools, it will not be able to update games developed with Unreal Engine on IOS and Mac OS, and will eventually be forced to terminate Unreal Engine’s use on IOS and MacOS.” < / P > < p > Epic Games has a strong foundation, which is inseparable from its powerful technology. Unreal engine is a technology used to display 3D graphics. Epic has developed unreal engine for more than 20 years. By licensing unreal engine to other game developers, epic supports the production of many games. The latest version of unreal engine is unreal engine 4, which can run on almost all major computer platforms, including Sony’s PS, windows and Nintendo’s switch. Nowadays, unreal engine supports games made by unreal engine. < / P > < p > most of the famous 3A level games also use epic’s engine technology, such as “battlebounds”, “rocket League” and “minecraft dungeons”. Not only that, Hollywood is also using unreal engine to create more realistic movie backgrounds and environments. In addition, epic extends from the game and entertainment industries to the medical and manufacturing industries. Unreal engine is used to build training applications. The business model of Epic Games insists on supporting small and medium-sized developers. Only when a game developer who uses unreal engine has more than $1 million in revenue will he have to pay a 5% licensing fee to epic, or they can negotiate more directly with epic. However, epic never disclosed the amount of revenue that unreal engine generated for the company. < p > < p > last month, after companies including Sony, fidelity and Lightspeed venture capital injected capital into epic, its valuation reached $17.3 billion. Investors are optimistic about the future of unreal engine, which is the main driving force supporting epic’s overvalue.