Genre: Information/Explanation

C-evo Contents C-evo ( a.k.a. Civilization-evolution ) is a free-to-play game similar to Civilization II . The game was written in the Delphi programming language , with the main programming done by Steffen Gerlach . The source code is in the public domain , but the graphics are freeware . A successful player manages to find a balance among these choices . The game starts with the development of the wheel , and ends when the first player has successfully constructed the first off-planet spaceship headed out into the Solar System . As the game progresses , the player finds that the building of factories , for example , leads to increased pollution , which must be cleaned up and could be eliminated through development of cleaner technologies . At all stages , cities that grow larger than size 4 have reduced productivity because of unrest until suitable buildings or police are in place to keep the populace under control . Examining a city screen selected from the cities menu at an advanced stage of the game In addition to the standard AI that comes with C-Evo , a number of different AI's ( programs that play C-Evo ) with different strategies are available for C-Evo ; most of the following links are direct links to the zipped files to download : As with the commercial and the other free civ games , there are a variety of strategies possible , though the ultimate launch of a spaceship is the only way of officially winning . The game goes through several somewhat distinct phases , based on the advances a player has researched : Given that the AIs are supposed to operate in a range of map sizes and unknown environments ( sea / land , hostile / friendly opponents ) they often have different counter-strategies for each ( overlapping ) phase . eXpand - . often an early ( aggressive ) land-grab where each nation tries to stake out as much territory as possible eXchange - given that AIs have same standing as humans , they are allowed to form alliances and trade amongst themselves ( money , tech , unit designs , information ) eXploit - once the terrirtories / borders are firmly established , develop the cities and build an advantage , sometimes polishing off weak opponents if opportunity arises . eXtinguish - the end-game relies on achieving the primary objective of assembling components for a spacecraft and more importantly surviving long enough to do so , which often involves conquering strong enemies . On the C-evo webpage , the game , its source code , AI modules , player contributions such as many additional nations , maps , mods , and utilities are available . The game has an open AI interface , which means the player can replace the standard AI contained in the package with other AI algorithms , either for all nations or for individual nations . The documentation of the AI's DLL-interface is available from the project homepage . There is also an AI development kit . C-evo by design , is completely deterministic : Its only randomness lies in what the map looks like , where each player starts and what the player ( s ) choose to do . There are no random events , goodie-huts , or random rewards for exploration . C-evo by design , says AIs play by the same rules as humans and therefore AIs can not cheat or bend the rules to favor themselves . However , one may set any of the 15 players to an easier or harder level at the start of the game and may edit the map to set AI and human starting positions . C-evo by design , says military unit designs must be created by a player and then researched before that unit can be built . One must strategically choose what qualities ( for example : mobility , attack power , defense , etc. ) will be built into the units before designing and building them . In contrast to Civilization II , a player can not immediately gain the advances acquired from other nations or the Great Library : a reduced amount of research is still necessary to achieve the new technology . In contrast to Civilization II , a player does not acquire knowledge from capturing a city unless that player possesses the Temple of Zeus Wonder and it is still active ( or obsolete but restored with the Eiffel Tower Wonder ) . In contrast to Civilization II , irrigation does not require the connection to a nearby sea or river , irrigation may be built on any qualifying tile anywhere . In contrast to Civilization II , a diagonal step requires 1.5 movement points . All units have at least 1.5 points possible , the most primitive ships have 2.5 , and the most primitive aircraft have 4.5 . In C-evo , a new city does not gain trade resources or contribute to research until it has at least a town hall or courthouse built . In C-evo , a stealth aircraft is hidden and can not be attacked unless your own spy or stealth aircraft has uncovered it in that turn , in which case your other planes can attack it . In C-evo , building a spaceship requires scarce modern resources , and without access to the territories containing these resources , as well as the advancements to see or use these resources , the game can not be won . C-evo HowTo - A How To guide for playing C-evo geared for someone who has never played any of the Civilization games before ( recommended reading even for those who have , because C-evo is NOT exactly like Civ2 ) . C-evo wiki forum - An alternative to the official C-evo forum , primarily for discussing content of this wiki , but open to all questions and ideas and more easily searchable than the official forum .