On tower defense maps you build towers and your mission is to bring down all of the incoming creeps. The creeps come in waves and with each wave the creeps are getting stronger. How long can you survive?
All in all, it was an amazing experience, with the strongest towers not being the final iteration, but the second-to-final iteration. Sure it fired a bit slower, but it was more powerful. If you could space these towers out in a specific order along your path, you could have two or three towers hitting one minion each time it crossed a certain point heading toward your base, and it would die. Eventually, with the gold generated by attacking with your own powered-up creeps and your home base maxed out, you could get two or even three layers of towers, all attacking enemies in a slaughter-fest of magical proportions, without any breaks in the formation of how you first laid out your defenses. In all honesty, those games were few and far between, taking upwards of two hours to complete, which to be honest were loads of fun even if you were on the losing side! That just made my brother, friend, and me want to play again and win even more than we did beforehand.
Gem Tower Defense is a tower defense video game created by Bryan K. It was released on February 18, 2007, under the tower defense subsection of Blizzard's Warcraft III: The Frozen Throne minigames. Several game clients, Flash browser game websites and mobile devices have hosted variants of the game. The game is based upon strategy, mazing, decision making and chance. The goal of the game is to eliminate computer-controlled enemies that follow a set path to reach the end of a pathway. "Gems" are structures players build to defend their maze. Each Gem is randomly distributed leaving it to chance for a player to acquire the one needed. Gems are placed to form a maze for extending the length each enemy unit travels thereby increasing the attack time of the Gems. Both the type and quality of the Gems selected determine the damage and use of the structure.
Gem Tower Defense is a tower defense game built on planning and chance. The goal of the game is to prevent computer-controlled enemies from reaching the end of a path. Players start by placing five random Gems on the map and then choosing one to keep. The Gems are distributed by random with the attributes of type and quality. The type of gem determines what the gem does and the quality represents its strength. The chosen gem has the ability to damage enemy units while the remaining four Gems become rocks. Rocks and Gems block enemy units, whereby a row of rocks and Gems form a wall to redirect the enemy. Enemy units enter in groups, known as waves, traveling through checkpoints before reaching the end of the pathway. The checkpoints on the path are alterable by players to give giving Gems more time to attack. The bounty from defeating each wave allows players to purchase Gem upgrades, unlocking possibilities for players to obtain higher quality gems. Additionally, Gems already on the map can be combined into special gems. These special Gems have unique abilities that are used for various waves.
Before each wave of enemy units spawn, the type(s) of enemy unit are announced for the players to prepare. All the units in the same wave will have identical details based upon the tower defense norms:
TD stands for "tower defense". It is a "genre" of custom game for Warcraft III.
The TD genre was pioneered early on with such games as "TD" and "Arkguil's TD".
In a TD, the objective is usually to construct buildings to prevent units that walk along a set path from reaching an area.
TD's usually consist of multiple "levels" of gradually increasing difficulty.
All of these components need to be put together to create a working game.
Each TD works somewhat differently, but the basic order of operations is the same.
Almost every tower defense begins with choosing units, then progressing through levels of creeps throughout the game.
Below is a basic structure of how a TD operates.
The first thing is the collision size of the creeps.
We have experimented with many sizes, and concluded the size should be ONE.
We only want creeps to attack if a player blocked them in solid.
Your tower defense should detect an attack, then re-issue the movement order.
Creeps won't continue moving on their own.
You will probably need multiple triggers if you have multiple way points as well.
Towers are the human player's defense against the invading creeps. Normally towers can be placed anywhere on the map except directly on the path. Towers can be upgraded with resources. Towers have many different abilities, costs, and uses. They cover different ranges and have specific targets. Towers can differ in cost, range, power, firing rate, effect on creeps and more.
Creeps are defined as the enemy. Creeps move along the path at varying speeds trying to reach the end of the path. Creeps usually have different attributes such as size, speed and defense. Usually in TD Games, the creeps that follow the path in the beginning levels are relatively low strength and low speed. As your progress through the game, these creeps increase in armor, speed and size and typically take multiple upgraded towers to kill. Some creeps are unaffected by certain towers, thus the human player is best served to diversify his arsenal of towers.
These reward systems are created to, as Avery states, "...increase the interest and lengevity of TD games..." As the creeps pass though the map, the towers destroy them. As each creep is destroyed, typically, the human player is rewarded with some sort of resource. These resources can be used to purchase tower upgrades, new towers, and more. These resources function as a way for the users to increase the power of their tower defense in order to sufficiently withstand the next levels creeps. Acquiring new defenses is an imperative feature in the design of TD games and allow the player to confront increasingly difficult and/or numerous AI or player-controlled enemies. This enables developers to incorporate more variability int he gameplay-contingent on the axiom that players are acquiring the rewards.
The majority of TD games involve a singe player strategizing the use of his tower defense against the computer-controlled creeps. However there are examples of multiplayer TD games such as Rampart as well as others that function to have humans work as a team to withhold the onslaught of creeps. This is also an example of a cooperative TD game. The popular multiplayer online battle arena (MOBA) game League of Legends is known for incorporating elements of tower defense into a multiplayer battle arena.
The success of the Tower Defense model generated significant buzz in the gaming community and eventually influenced the creation of custom maps that adopted the TD Game Model for mainstream computer games such as Starcraft, Age of Empires II, and Warcraft III. [4] Fans utilized the free map creation tools in Starcraft and Warcraft III to create custom TD style maps. These Tower Defense maps became so popular that the game developers themselves included TD style levels in further releases of the game as well as in expansion packs.[5] As noted in Phillipa Avery's text, Computational Intelligence and Tower Defense Games, "One of the most popular versions of these [tower defense model-based maps], and arguably the original true TD style game was the Tower Defense maps for the Warcraft III expansion The Frozen Throne." This addition in the Warcraft III expansion signaled the TD Game genre's entrance into the mainstream and sparked a growth in the genre's awareness on a larger level.
The Tower Defense Genre continues to be very successful on the mobile platform. Today, Bloons TD5 and Plants vs. Zombies are the leading mobile Tower Defense Games in the Apple App Store.[9] The mechanics and environment of mobile gaming platforms such as iOS and Android are very receptive to TD videogames. Many tower defense titles have hit the top of the charts like Fieldrunners and Anomaly: Warzone Earth. The simple nature of these games makes them well-suited to be marketed at the low prices or 'free to play' models that are consistently found in the App Store or on Google Play.
Developed by Paul Preece in 2007, Desktop Tower Defense is widely considered as the game that launched the genre of Tower Defense games into the mainstream. [12] Desktop TD is a simple, easy to pick up, well-designed spin-off of the Real-Time Strategy genre and is speculated to be influenced by Rampart. Desktop TD is a flash-based game that found it's success through it's "short-feedback loop" and "5 levels of addiction as described by Daniel Renkel in his text, Desktop Tower Defense: Perfect Job. Renkel smartly points out that the human player's experience is significantly enhanced by this "short-feedback loop" in which the user can experience his fun and improvement almost instantaneously, feeding the thirst for instant gratification found in the youth of the world today. His description of the 5 levels of addiction is worth noting. The first level, states Renkel, is that as you fend off creeps, the user yields money (resources) that can be used to upgrade or purchase more defenses. The second level is that you can use these resources to buy more towers and make the path in which the creeps travels longer and harder, therefore you accumulate more resources to build more towers. The third level, is the "send next wave" button in the game. Using this, Renkel says, you can allow more creeps to pass through and build a stockpile of even more resources. Level 4 is the fact that instantly, when you lose you can start a new match and access more towers, enemies and upgrades. And finally, level 5 is the high score list, which you can compare and show off. [13] These "5 levels" of addiction, detailed by Renkel, are ultimately what fueled the success of the Tower Defense Genre and illustrate why Desktop Tower Defense is such an important case study when looking at the Tower Defense game genre as a whole.
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