Developer(s) | Wildfire Games |
---|---|
Initial release | April 1, 2010 |
Preview release | |
Repository | gitea |
Written in | C++, JavaScript, JSON, XML |
Engine | Pyrogenesis |
Operating system | FreeBSD, Linux, macOS, Microsoft Windows, OpenBSD |
Size | 1.25 GB (Download), 3.31 GB (Installed) |
Type | Real-time strategy |
License |
|
Website | play0ad |
0 A.D. [a] is a free and open-source real-time strategy video game under development by Wildfire Games. It is a historical war and economy game focusing on the years between 500 BC and 1 BC, with the years between 1 AD and 500 AD planned to be developed in the future. [2] [3] The game is cross-platform, playable on Windows, macOS, Linux, FreeBSD, and OpenBSD. [4] It is composed entirely of free software and free media, using the GNU GPLv2 (or later) license for the game engine source code, and the CC BY-SA license for the game art and music. [5] [6]
0 A.D. features the traditional real-time strategy gameplay components of building a base, developing an economy, training an army, engaging in combat, and researching new technologies. [7] [3] The game includes multiple units and buildings specific to each civilization as well as both land and naval units. [8]
During the game, the player advances from "village phase", to "town phase", to "city phase". The phases represent the sizes of settlements in history, and every phase unlocks new units, buildings, and technologies.
Multiplayer functionality is implemented using peer-to-peer networking, without a central server. [9]
0 A.D. originally began in 2001 as a comprehensive total conversion mod concept for Age of Empires II: The Age of Kings . [10] The development team later decided that making the project as a mod was too limiting to their creative freedom, and elected to move their art and ideas to an in-house engine, making it a standalone game. [11]
The historical accuracy of the game elements has been the highest development priority. Unit and building names are shown in the original language of the civilization they belong to, and they are also translated into the language in which the user is playing the game. There is also a strong focus on attempting to provide high visual accuracy of unit armor, weapons, and buildings. [10]
On 10 July 2009, Wildfire Games released the source code for 0 A.D. under the GNU GPLv2 (or later) license, and made the artwork available under the CC BY-SA license. [5] [6]
There were around ten to fifteen people working on 0 A.D. around 23 March 2010; but since development started, over 100 people have contributed to the project. [12] On 5 September 2013, an Indiegogo crowdfunding campaign was started with a US$160,000 goal. They raised a total of US$33,251 to be used to hire a programmer. [13] The majority of the project's finances are managed by the Software in the Public Interest organization. There is no official release date set for the finished version of the game. [14]
The composers of the music in the game are Omri Lahav, Jeff Willet, Mike Skalandunas, and Shlomi Nogay. A 26-track soundtrack was released on 8 June 2018. [15]
In 2012, 0 A.D. received second place in the IndieDB Player's Choice Upcoming Indie Game of the Year competition. [16] 0 A.D. has been generally well received. [17] It was voted as LinuxQuestions.org "Open Source Game of the Year for 2013". [18] Between 2010 and June 2021, the game was downloaded from SourceForge.net over 1.3 million times. [19]
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Free and open-source software (FOSS) is software that is available under a license that grants the right to use, modify, and distribute the software, modified or not, to everyone free of charge. The public availability of the source code is, therefore, a necessary but not sufficient condition. FOSS is an inclusive umbrella term for free software and open-source software. FOSS is in contrast to proprietary software, which consists of software under restrictive copyright or licensing as well as software with undisclosed source code.
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This comparison only covers software licenses which have a linked Wikipedia article for details and which are approved by at least one of the following expert groups: the Free Software Foundation, the Open Source Initiative, the Debian Project and the Fedora Project. For a list of licenses not specifically intended for software, see List of free-content licences.
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License compatibility is a legal framework that allows for pieces of software with different software licenses to be distributed together. The need for such a framework arises because the different licenses can contain contradictory requirements, rendering it impossible to legally combine source code from separately-licensed software in order to create and publish a new program. Proprietary licenses are generally program-specific and incompatible; authors must negotiate to combine code. Copyleft licenses are commonly deliberately incompatible with proprietary licenses, in order to prevent copyleft software from being re-licensed under a proprietary license, turning it into proprietary software. Many copyleft licenses explicitly allow relicensing under some other copyleft licenses. Permissive licenses are compatible with everything, including proprietary licenses; there is thus no guarantee that all derived works will remain under a permissive license.
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Companies whose business centers on the development of open-source software employ a variety of business models to solve the challenge of making profits from software that is under an open-source license. Each of these business strategies rest on the premise that users of open-source technologies are willing to purchase additional software features under proprietary licenses, or purchase other services or elements of value that complement the open-source software that is core to the business. This additional value can be, but not limited to, enterprise-grade features and up-time guarantees to satisfy business or compliance requirements, performance and efficiency gains by features not yet available in the open source version, legal protection, or professional support/training/consulting that are typical of proprietary software applications.
A free-software license is a notice that grants the recipient of a piece of software extensive rights to modify and redistribute that software. These actions are usually prohibited by copyright law, but the rights-holder of a piece of software can remove these restrictions by accompanying the software with a software license which grants the recipient these rights. Software using such a license is free software as conferred by the copyright holder. Free-software licenses are applied to software in source code and also binary object-code form, as the copyright law recognizes both forms.
The GNU General Public Licenses are a series of widely used free software licenses, or copyleft licenses, that guarantee end users the freedoms to run, study, share, and/or modify the software. The GPL was the first copyleft license available for general use. It was originally written by Richard Stallman, the founder of the Free Software Foundation (FSF), for the GNU Project. The license grants the recipients of a computer program the rights of the Free Software Definition. The licenses in the GPL series are all copyleft licenses, which means that any derivative work must be distributed under the same or equivalent license terms. It is more restrictive than the Lesser General Public License, and even further distinct from the more widely-used permissive software licenses such as BSD, MIT, and Apache.
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Die Spieleschmiede Wildfire Games hat eine neue Version ihres klassischen Echtzeitstrategiespiels 0 A.D. für Linux, Windows und Mac OS X veröffentlicht. Mit Hilfe einer Crowdfunding-Kampagne soll außerdem die Entwicklung des Spiels beschleunigt werden.