Concept
Freeciv
Related concepts (4)
Civilization (series)
Civilization is a series of turn-based strategy video games, first released in 1991. Sid Meier developed the first game in the series and has had creative input for most of the rest, and his name is usually included in the formal title of these games, such as Sid Meier's Civilization VI. There are six main games in the series, a number of expansion packs and spin-off games, as well as board games inspired by the video game series.
Technology tree
[[File:Freeciv-2.1.8 technology tree (cropped).png|thumb|upright=1.5|Part of Freecivs technology tree, showing complex dependencies between technologies. For example, astronomy can be reached by first researching ceremonial burial and then mysticism, or by researching masonry followed by mathematics]] In strategy games, a technology, tech, or research tree is a hierarchical visual representation of the possible sequences of upgrades a player can unlock (most typically representing the research progress of a given faction).
4X
4X (abbreviation of Explore, Expand, Exploit, Exterminate) is a subgenre of strategy-based computer and board games, and includes both turn-based and real-time strategy titles. The gameplay generally involves building an empire. Emphasis is placed upon economic and technological development, as well as a range of military and non-military routes to supremacy. The earliest 4X games borrowed ideas from board games and 1970s text-based computer games. The first 4X computer games were turn-based, but real-time 4X games are common.
Civilization (video game)
Sid Meier's Civilization is a 1991 turn-based strategy 4X video game developed and published by MicroProse. The game was originally developed for MS-DOS running on a PC, and it has undergone numerous revisions for various platforms. The player is tasked with leading an entire human civilization over the course of several millennia by controlling various areas such as urban development, exploration, government, trade, research, and military. The player can control individual units and advance the exploration, conquest and settlement of the game's world.