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{{VG Strategy}}
{{VG Strategy}}
'''Tower defence''' is a [[video game genres|subgenre]] of [[real-time strategy]] [[computer game]]s.<ref>{{ cite web | url = http://www.gamasutra.com/view/feature/1728/slamdance_postcolumbine__.php | title = Slamdance, Post-Columbine - Personal Conversations with Freaks and Geeks | author = Patrick Dugan | publisher = Gamasutra | accessdate = 2008-12-09 | date = 2007-01-30 }}</ref><ref>{{ cite web | url = http://www.gamasutra.com/view/feature/3722/interview_soren_johnson__spores_.php?page=5 | title = Interview: Soren Johnson - Spore's Strategist | author = Chris Remo and Brandon Sheffield | publisher = Gamasutra | date = 2008-07-11 | accessdate = 2008-12-09 }}</ref> The goal is to try to stop enemies from crossing the map by building towers which shoot at them as they pass. Enemies and towers usually have varied abilities and costs. When an enemy is defeated, the player earns money or points, which are used to buy or upgrade towers.<ref name="wsj">{{ cite web | url = http://online.wsj.com/public/article/SB117987060189311315-X7F9b2kgxKbL1y0fZbnAHkOurR0_20080619.html | title = Strategy Game Pits Players Against Desktop Invasion | last = Rutkoff | first = Aaron | publisher = [[Wall Street Journal]] | date = 2007-06-20 | accessdate = 2008-03-07 }}</ref>
'''Tower defense''' is a [[video game genres|subgenre]] of [[real-time strategy]] [[computer game]]s.<ref>{{ cite web | url = http://www.gamasutra.com/view/feature/1728/slamdance_postcolumbine__.php | title = Slamdance, Post-Columbine - Personal Conversations with Freaks and Geeks | author = Patrick Dugan | publisher = Gamasutra | accessdate = 2008-12-09 | date = 2007-01-30 }}</ref><ref>{{ cite web | url = http://www.gamasutra.com/view/feature/3722/interview_soren_johnson__spores_.php?page=5 | title = Interview: Soren Johnson - Spore's Strategist | author = Chris Remo and Brandon Sheffield | publisher = Gamasutra | date = 2008-07-11 | accessdate = 2008-12-09 }}</ref> The goal is to try to stop enemies from crossing the map by building towers which shoot at them as they pass. Enemies and towers usually have varied abilities and costs. When an enemy is defeated, the player earns money or points, which are used to buy or upgrade towers.<ref name="wsj">{{ cite web | url = http://online.wsj.com/public/article/SB117987060189311315-X7F9b2kgxKbL1y0fZbnAHkOurR0_20080619.html | title = Strategy Game Pits Players Against Desktop Invasion | last = Rutkoff | first = Aaron | publisher = [[Wall Street Journal]] | date = 2007-06-20 | accessdate = 2008-03-07 }}</ref>


The choice and positioning of the towers is the essential strategy of the game. Many games, such as ''[[Flash Element Tower Defense]]'', feature enemies that run through a "maze", which allows the player to strategically place towers for optimal effectiveness.<ref name="novelconcepts_fetd">{{ cite web | url = http://www.novelconcepts.co.uk/FlashElementTD/ | title = Flash Element Tower Defense | last = Scott | first = David | publisher = David Scott | accessdate = 2009-04-15 }}</ref> However, some versions of the genre force the user to create the maze out of their own towers, such as ''[[Desktop Tower Defense]]''.<ref name="handdrawn_dtd">{{ cite web | url = http://www.handdrawngames.com/DesktopTD/game.asp | title = Desktop Tower Defense (on handdrawngames.com) | last = Preece | first = Paul | publisher = Paul Preece | accessdate = 2008-09-25 }}</ref> Some versions are a hybrid of these two types, with preset paths that can be modified to some extent by tower placement.
The choice and positioning of the towers is the essential strategy of the game. Many games, such as ''[[Flash Element Tower Defense]]'', feature enemies that run through a "maze", which allows the player to strategically place towers for optimal effectiveness.<ref name="novelconcepts_fetd">{{ cite web | url = http://www.novelconcepts.co.uk/FlashElementTD/ | title = Flash Element Tower Defense | last = Scott | first = David | publisher = David Scott | accessdate = 2009-04-15 }}</ref> However, some versions of the genre force the user to create the maze out of their own towers, such as ''[[Desktop Tower Defense]]''.<ref name="handdrawn_dtd">{{ cite web | url = http://www.handdrawngames.com/DesktopTD/game.asp | title = Desktop Tower Defense (on handdrawngames.com) | last = Preece | first = Paul | publisher = Paul Preece | accessdate = 2008-09-25 }}</ref> Some versions are a hybrid of these two types, with preset paths that can be modified to some extent by tower placement.

Revision as of 19:40, 22 August 2010

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Tower defense is a subgenre of real-time strategy computer games.[1][2] The goal is to try to stop enemies from crossing the map by building towers which shoot at them as they pass. Enemies and towers usually have varied abilities and costs. When an enemy is defeated, the player earns money or points, which are used to buy or upgrade towers.[3]

The choice and positioning of the towers is the essential strategy of the game. Many games, such as Flash Element Tower Defense, feature enemies that run through a "maze", which allows the player to strategically place towers for optimal effectiveness.[4] However, some versions of the genre force the user to create the maze out of their own towers, such as Desktop Tower Defense.[5] Some versions are a hybrid of these two types, with preset paths that can be modified to some extent by tower placement.

History

Tower Defense games began in 1990 when Atari Games released Rampart.[6] Early tower defense games later began to appear post-1997 in minigames for other platforms, such as Final Fantasy VII. By 2000, maps for StarCraft, Age of Empires II, and WarCraft III were following suit.[7]

Eventually, independent game developers began using Adobe Flash to make stand-alone tower defense browser games,[8] which led to the release of Flash Element Tower Defense in January 2007[9] and then Desktop Tower Defense in March of the same year.[10][11][12] Desktop Tower Defense became immensely popular and earned an Independent Games Festival award,[13] and its success led to a version created for the mobile phone by a different developer.[14] Several other tower defense computer games achieved a level of fame, including Protector,[12] Immortal Defense,[15] GemCraft,[16] and Plants vs. Zombies.[17]

By 2008, the genre's success led to tower defense games on video game consoles such as Defense Grid: The Awakening on the PC and Xbox 360,[18] and PixelJunk Monsters and Savage Moon for the PlayStation 3.[7] Tower defense games have also appeared on handheld game consoles such as Lock's Quest and Ninjatown on the Nintendo DS,[19] and there are dozens of games for the iPhone/iPod Touch and Android.

Gameplay

Tower defense games are characterised by the positioning of static units by the player to defend against mobile enemy units who are trying to get from a start point to an end point. There is a set number of enemy units (or 'damage' the player can take from units reaching the end point) who can reach the end point before the level is lost. Some games use a static route that the enemy units follow around which the player places their towers, while others favour a free-form environment that allows the user to define the path the enemy units take. Some games use a mixture of both. Most games allow the upgrading of the player's towers.

The degree of the player's control (or lack thereof) in such games also varies from games where the player controls a unit within the game world, to games where the player has no direct control units at all.

USPTO - Trademark

On June 3, 2008 - COM2US Corporation was awarded the trademark for the term "Tower Defense", filed on June 13, 2007 - serial number 3442002. The corporation has been reported to start enforcing the trademark;[20] specifically on the iPhone/iPod Touch platform as a number of small or independent developers are now receiving messages from Apple citing trademark violation:

Additionally, your application appears to contain features, namely a trademark name, that appears to infringe on rights owned by Com2us corporations, specifically TowerDefense.

Please remember that pursuant to your agreement with Apple, you represent and warrant that your application does not infringe the rights of another party, and that you are responsible for any liability to Apple because of a claim that your application infringes another party's rights. Moreover, we may reject or remove your application for any reason, in our sole discretion.

Upon resubmission of your application, please provide documentary evidence that you have the rights to use this content to ensure compliance with the iPhone Developer Program License Agreement at the time you resubmit your new binary to iTunes Connect.

References

  1. ^ Patrick Dugan (2007-01-30). "Slamdance, Post-Columbine - Personal Conversations with Freaks and Geeks". Gamasutra. Retrieved 2008-12-09.
  2. ^ Chris Remo and Brandon Sheffield (2008-07-11). "Interview: Soren Johnson - Spore's Strategist". Gamasutra. Retrieved 2008-12-09.
  3. ^ Rutkoff, Aaron (2007-06-20). "Strategy Game Pits Players Against Desktop Invasion". Wall Street Journal. Retrieved 2008-03-07.
  4. ^ Scott, David. "Flash Element Tower Defense". David Scott. Retrieved 2009-04-15.
  5. ^ Preece, Paul. "Desktop Tower Defense (on handdrawngames.com)". Paul Preece. Retrieved 2008-09-25.
  6. ^ Luke Mitchell (2008-06-22). "Tower Defense: Bringing the genre back". PALGN. Retrieved 2008-12-24.
  7. ^ a b Luke Mitchell (2008-06-22). "Tower Defense: Bringing the genre back". PALGN. Retrieved 2008-12-24.
  8. ^ Michael Walbridge (2008-06-12). "Analysis: Defense of the Ancients - An Underground Revolution". GamaSutra. Retrieved 2008-12-09.
  9. ^ Jay (2007-01-11). "Flash Element TD". Jayisgames. Retrieved 2007-01-11.
  10. ^ Erwan Cario (10 November 2007). "Jouer plus pour travailler moins Jeux vidéo. Sélection de petites douceurs en ligne, dangereusement addictives". Libération.
  11. ^ Chris Remo (2008-11-18). "Interview: Flash Tower Defense Creators On VC Deal, Social Gaming Site". Gamasutra. Retrieved 2008-12-09.
  12. ^ a b Alistair Wallis (2008-08-01). "Q&A: Kongregate's Greer And Sirlin On Metagame Hopes With Kongai". Gamasutra.
  13. ^ "2008 IGF Awards Topped By Crayon Physics Deluxe". Gamasutra. 2008-02-21. Retrieved 2008-12-09.
  14. ^ Roush, George (2007-12-05). "Tower Defense Review". IGN. Retrieved 2008-03-07.
  15. ^ Tim W. (2008-10-24). "Best Of Indie Games: Ready, Set, Jill Off". Gamasutra. Retrieved 2008-12-09.
  16. ^ Tim W. (2008-06-13). "Best Of Indie Games: Rose, Camellia, Ziczac & Nameless". Gamasutra. Retrieved 2008-12-09.
  17. ^ "Plants vs. Zombies nominated for PC Game of the Year".
  18. ^ Kevin Kelly (2008-08-30). "PAX 2008 hands-on: Defense Grid: The Awakening". Joystiq. Weblogs.
  19. ^ Daemon Hatfield (2008-09-22). "Ninjatown Multiplayer Hands-on". IGN. Retrieved 2008-12-30.
  20. ^ Jordan, Jon (25 January 2010). "Com2uS "guides" developers not to use its trademark Tower Defense". PocketGamer.biz. Retrieved 27 January 2010.
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