Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Developer | Release | Type | Game flow | Setting |
| --- | --- | --- | --- | --- | --- |
| 8Realms | Jagex | 2011 (now closed) | Strategy | Real-time | Empire building |
| Adventure Quest Worlds | Artix Entertainment | 2008 | MMORPG | Real-time | RPG |
| Blood Wars | BW Team | 2006 | MMORPG | Real-time | Post-apocalyptic world |
| Business Tycoon Online | Dovogame LLC | 2009 | MMORPG | Real-time | Fantasy/Business Simulation |
| Castle Marrach | Skotos | 2001 | role-playing | Real-time | Fantasy/storytelling |
| Castle of Heroes | SNAIL Game | 2009 | Strategy | Real-time | Fantasy/empire building |
| Club Penguin | New Horizon Entertainment/Disney | 2005 | Social networking | Real-time | Antarctica |
| Cyber Nations | Kevin Marks | 2006 | Strategy | Turn-based | Contemporary/country building |
| Dead Frontier | Neil Yates | 2008 | MMORPG, Third-person shooter | Real-time | Post-apocalyptic world |
| Domain of Heroes | Tandem Games | 2008 | MMORPG | Text-based RPG | Fantasy |
| Doomlord | Beholder Kft | 2008 | RPG | Real-time | Fantasy |
| Earth Eternal | Sparkplay Media | 2009 | MMORPG | Real-time | Fantasy |
| Echo Bazaar! | Failbetter Games | 2009 | RPG | Turn-based | Gothic Fantasy/Steampunk |
| Empire & State | Novel, Inc. | 2011 | MMORPG | Real-time | Science Fiction |
| eRepublik | eRepublik Labs | 2008 | Strategy | Real-time | Contemporary/country building |
| Evony | Evony | 2009 | Strategy | Real-time | Fantasy/empire building |
| Forumwarz | Crotch Zombie Productions | 2008 | Strategy | Turn-based | Contemporary/Internet forum |
| Freeciv.net | The Freeciv Project | 2010 | Strategy | Turn-based | Empire building game |
| FusionFall | Cartoon Network/Grigon Entertainment | 2009 | MMORPG | Real-time | Science fiction |
| Grendel's Cave | Grendel Enterprises, L.L.C. | 1998 | Adventure | Real-time | Literary (Beowulf) |
| Habbo Hotel | Sulake Inc. | 2000 | Social networking | Real-time | Contemporary/teenagers |
| Hattrick | ExtraLives | 1997 | Strategy | Real-time | Contemporary/soccer team |
| Heroes Of Might and Magic Kingdoms | Ubisoft | 2010 | Strategy | Real-time | Empire Building |
| Ikariam | Gameforge | 2007 | Strategy | Real-time | Ancient Greece/empire building |
| Illyriad | Illyriad Games Ltd | 2011 | Strategy | Real-time | Fantasy/empire building |
| Kantai Collection | Kadokawa Games | 2013 | card battle game | Real-time | World War II |
| kdice | Ryan Dewsbury | 2006 | Strategy | Turn-based | Abstract war game |
| Kingdom of Loathing | Asymmetric Publications | 2003 | role-playing | Turn-based | Fantasy/humorous |
| Legends of Zork | Jolt Online Gaming | 2009-2011 (now closed) | role-playing | Turn-based | Fantasy/humorous |
| Little Space Heroes | Bubble Gum Interactive | 2011 | MMORPG | Real-time | Kids |
| Lord of Ultima | Electronic Arts | 2010 | Strategy | Real-time | Fantasy |
| Miniconomy | Trade Games International BV | 2002 | Strategy | Real-time | Contemporary/country building |
| Monopoly City Streets | Tribal DDB, Hasbro | 2009 (now closed) | Strategy | Real-time | Board game |
| Nadirim | Twisted Tribe | 2011 (now closed) | MMORPG | Turn-based | Arabian fantasy |
| NationStates | Max Barry | 2002 | Strategy | Real-time | Contemporary/country building |
| Neopets | Viacom | 1999 | Strategy, Simulation | Real-time | Virtual Pet Site |
| Nile Online | Tilted Mill Entertainment | 2008 | Strategy | Real-time | Ancient Egypt/empire building |
| NukeZone | Stefan Karlstrom | 2001 | Strategy | Turn-based | Contemporary/war |
| Omerta (video game) | Omerta Game Limited | 2003 | MMORPG | Real-time | Mafia |
| OGame | Gameforge AG | 2002 | Strategy | Real-time | Science fiction |
| Pardus | Bayer&Szell OEG | 2004 | Strategy | Turn-based | Science fiction |
| Pirate Galaxy | Splitscreen Studios | 2000 | role-playing | Real-time | Science fiction |
| Planetarion | FUBRA | 2000 | Strategy | Turn-based | Science fiction |
| Quake Live | id Software | 2009 | First-person shooter | Real-time | Science fiction |
| Quick Hit Football | Play Hard Sports | 2009 | Sports game |  | Sports/American football |
| RaceConflicts | Raceconflicts | 2004 | MMORPG | Turn-based | Fantasy |
| Realm of the Mad God | Wildshadow | 2010 | MMORPG | Real-time | Fantasy |
| RuneScape | Jagex | 2001 | MMORPG | Real-time | Fantasy |
| Samurai Taisen | PST Team | 2013 | MMORTS, Visual Novel | Real-time | Sengoku period |
| Sentou Gakuen | PST Team | 2012 | MMORPG, Visual Novel | Real-time | School Life |
| Tanki Online | AlternativaPlatform | 2009 | 3D MMO-Shooter | Real-time | Post-apocalyptic world |
| Terra Est Quaestuosa | Schoot Digital Productions | 1998 | Strategy | Turn-based | Contemporary/country building |
| Terra Militaris | SNAIL Game | 2010 | Strategy | Real-time | Historical/empire building |
| ThreeChess | RS Consult BG Ltd. | 2010 | Strategy | Turn-based | Chess variant |
| Trade Wars | Sylien Games | 2007 | Space trade and combat | Real-time | Fantasy |
| Transformice | Tigrounette, Melibellule | 2010 | Platform game | Real-time | MMOG |
| Travian | Travian Games | 2004 | MMORTS, Strategy | Real-time | Antiquity/empire building |
| Twilight Heroes | Quirkz Media | 2007 | role-playing | Turn-based | Contemporary/superheroes |
| Urban Dead | Kevan Davis | 2005 | MMORPG | Turn-based | Contemporary/zombies |
| Urban Rivals | Boostr | 2006 | Collectible card game | Turn-based | Board game |
| Tribal wars | Inno Games | 2003 | Strategy | Real-time | Empire building |
| Virtonomics | Gamerflot Ltd. | 2009 | Business game | Turn-based | Modern/business |
| War of Legends | Ultizen | 2010 | Strategy | Real-time | Chinese fantasy |
| World of the Living Dead: Resurrection | Ballardia | 2013 | MMORPG | Real-Time | Zombie Survival Strategy |
| X-Wars | Sebastian Lagemann, Nils Mitoussis, Mediatainment GmbH | 2002 | Strategy | Real-time | Science fiction |
Question:
how many games are defined as empire building?
Answer:
9