War Thunder

War Thunder is a World War II-inspired massively multiplayer online combat game developed by Gaijin Entertainment for Microsoft Windows, OS X, Linux, PlayStation 4 and Shield Android TV.

Game model

The game is modeled on a micro-transaction system but with the ability to get almost every feature of the game without paying. This may require players to complete certain challenges (such as shooting down a certain number of enemy aircraft or destroying a certain number of ground targets), or submitting user created content such as skins, or camouflage for vehicles. There may also be other celebratory events throughout the year such as commemorating historic figures in aviation or famous battles allowing players to win premium currency and premium vehicles without any expenditure.

There is also a referral service, whereby players can invite people to the game, earning both themselves and the new player an in-game bonus.

Game Currency

War Thunder uses 4 main currencies: Silver Lions, Golden Eagles, Research Points, and Convertible Research Points.

World of Tanks

World of Tanks is a massively multiplayer online game developed by Belarusian-Cypriot company Wargaming, featuring early to mid-20th century era fighting vehicles. It is built upon a freemium business model where the game is free-to-play, but participants also have the option of paying a fee for use of "premium" features. The focus is on player vs. player gameplay with each player controlling an armored vehicle, which may be a light, medium or heavy tank, tank destroyer, or self-propelled gun. World of Tanks debuted as an eSports game at the World Cyber Games 2012.

On 10 June 2013 it was announced that World of Tanks was coming to Xbox Live Arcade on 12 February 2014 as World of Tanks: Xbox 360 Edition. Xbox 360 players use separate servers to those playing the Windows version, and players of each version have separate accounts. The Xbox 360 version was developed by Wargaming West studio. An Xbox One version has been announced, and was released on 28 July 2015. A PlayStation 4 version is scheduled to release in 2016.World of Tanks has also recently expanded to mobile platforms under the name World of Tanks Blitz, in addition to a board game titled World of Tanks Rush and a collectable card game titled World of Tanks: Generals.

Kliment Voroshilov tank

The Kliment Voroshilov (KV) tanks were a series of Soviet heavy tanks named after the Soviet defense commissar and politician Kliment Voroshilov and used by the Red Army during World War II. The KV series were known for their heavy armour protection during the early part of the war, especially during the first year of the German invasion of the Soviet Union. In certain situations, even a single KV-1 or KV-2 supported by infantry was capable of halting the enemy's onslaught. German tanks at that time were rarely used in KV encounters as their armament was too poor to deal with the "Russischer Koloss" - "Russian Colossus."

The KV tanks were practically immune to the 3.7 cm KwK 36 and howitzer-like, short barreled 7.5 cm KwK 37 guns mounted, respectively, on the early Panzer III and Panzer IV tanks fielded by the invading German forces. Until more effective guns were developed by the Germans, the KV-1 was invulnerable to almost any German weapon except the 8.8 cm Flak gun. Even then, in a speech to the Panzerkommission on 18 November 1941, Guderian stated that "the sloped armor causes hits from the 8.8 cm Flak gun to ricochet" referring to the KV-1.

Tank

A tank is a large, heavily armoured fighting vehicle with tracks and a large tank gun that is designed for front-line combat. Modern tanks are mobile land weapon platforms, mounting a large-calibre cannon in a rotating gun turret. They combine this with heavy vehicle armour which provides protection for the crew, the vehicle's weapons, and its propulsion systems, and operational mobility, due to its use of tracks rather than wheels, which allows the tank to move over rugged terrain and be positioned on the battlefield in advantageous locations. These features enable the tank to perform well in a tactical situation: the combination of powerful weapons fire from their tank gun and their ability to resist enemy fire means the tank can take hold of and control an area and prevent other enemy vehicles from advancing. In both offensive and defensive roles, they are powerful units able to perform key primary tasks required of armoured units on the battlefield. The modern tank was the result of a century of development from the first primitive armoured vehicles, due to improvements in technology such as the internal combustion engine, which allowed the rapid movement of heavy armoured vehicles. As a result of these advances, tanks underwent tremendous shifts in capability during the World Wars of the 20th century.

Royalty-free

Royalty-free, or RF, refers to the right to use copyrighted material or intellectual property without the need to pay royalties or license fees for each use or per volume sold, or some time period of use or sales.

Computer standards

Many computer industry standards, especially those developed and submitted by industry consortium's or individual companies, involve royalties for the actual use of these standards. These royalties are typically charged on a "per port" basis, where the manufacturer of end-user devices has to pay a small fixed fee for each device sold, and also include a substantial annual fixed fee. With millions of devices sold each year, the royalties can amount to several millions of dollars, which is a significant burden for the manufacturer. Examples of such royalties-based standards include IEEE 1394, HDMI, and H.264/MPEG-4 AVC.

Royalty-free standards do not include any "per-port" or "per-volume" charges or annual payments for the actual implementation of the standard, even though the text of the actual specification is typically protected by copyright and needs to be purchased from the standards body. Most open standards are royalty-free, and many proprietary standards are royalty-free as well. Examples of royalty-free standards include DisplayPort, VGA, VP8, and Matroska.