Video games, as loved by many, can be used for entertainment and relaxation. Some video games are also helpful in improving motor skills and eye coordination. Video games come on different platforms such as arcade video games, console games, PC (personal computer) video games, and even in mobile gaming using a smartphone or a tablet. There are also what we call virtual (VR) and augmented reality (AR) games, and remote cloud gaming. Arcade games are those that are usually coin or card-operated and are normally seen in game establishments called, “Arcades”. Atari’s Pong was one of the first and most successful arcade games along with games such as Donkey Kong, Pac-Man, and Space Invaders. Popular arcade games such as Dance Dance Revolution, Mortal Kombat, and Street Fighter also gained popularity in the 1990’s-2000’s. They begane to decline in popularity as home video games became popular with Sony Playstation and Microsoft Xbox improving their graphics while decreasing cost to the consumer. Console games became popular because they could be enjoyed at home using a video game console, controllers and a television. Some of the biggest early console game developers were Microsoft, Nintendo, Sega, and Sony. Early game developers also adapted some of the biggest arcade games like Pac-Man on the Atari 2600 to function on consoles. Among the most popular historical games were Crash Bandicoot, FIFA International Soccer, Final Fantasy, GoldenEye 007, Mario, Metal Gear, Resident Evil, Tomb Raider and The Legend of Zelda. PC games became popular with IBM launching Microsoft Adventure, a fantasy game of caves and treasures. Sales were massive, and thousands of games were sold in North America, outselling the Commodore 64. However, a few years later, the Nintendo Entertainment System became so popular that there was a huge decrease of sales in disk games. Mobile games, which are played using a portable device like a mobile phone, a tablet with or without network connection also became popular. Pre-installed mobile games on phones, such as Tetris, were also popular. Tetris is one of the earliest mobile phone games, and Snake by Nokia which is one of the most-played pre-installed mobile phone games. It was found on more than 350 million phones worldwide. As Nokia phones' features advanced, a two-player game for Snake was also introduced with the use of the infrared port. With the online capabilities because of the internet, downloadable games slowly became more prominent. Apple’s release of their groundbreaking iPhone and it’s accompanying App Store changed the landscape of video games. A year later, they also added the in-app purchasing capability and allowed more monetization opportunities than just the usual premium subscription where users only have to pay once. Later on, Google offered the same when they launched the Android operating system for mobile phones and the Google Play store - a direct competitor to Apple. Aside from downloadable games, social media network games also became available. Farmville was one of the most popular social media network games. In-app purchases were also available in these games to increase or restore stamina for users to be able to continue playing. Other popular games during this time were Candy Crush Saga and Puzzle Dragons, as well as Flappy Bird, Crossy Road, and Pokemon Go which is a location-based game. These games are played using the GPS technology. As mobile gaming became popular, handheld video console games had a major drop in sales. Some mobile games also support multi-player capability remotely using the internet, or even locally using WiFi and bluetooth technology. Various tournaments are also held internationally with gamers matching to compete. These are done through various network connections such as Game Center, Facebook, and Google Play. Augmented Reality (AR) games, which are more interactive and more realistic, also involve using mobile devices as an input for the game. There are also mobile games created to be more educational and some to help improve health and lifestyle. In 2007, $3 billion worth of games were sold internationally due to the popularity of mobile games. Virtual Reality (VR) games are ones that use a special head-mounted unit that gives a simulated experience and makes it more realistic. Some also include a hand-controlled unit to make them more immersive. Cloud gaming runs on multiple servers requiring minimal hardware devices such as a computer, a console, and more. It operates just like remote desktops and video on demand services. The games are installed in a local computer and might require a high-speed, reliable internet connection. Video games are also categorized in different genres depending on their gameplay interaction. Games may be classified as an action game, role playing game, or shoot ‘em up. Action games are usually ones with physical challenges and may include fighting. Role playing games are ones that make the player more immersed as he/she controls the character in a well-defined world. It also includes developing the player’s character and maintaining statistics as well. Video games may have been developed for entertainment purposes but there is also another subset of games for some other purposes such as casual games, educational games, serious games, and art games. Casual games involve simpler rules and frequently use social network game mechanics. They are often low intensity games like matching, finding hidden objects, time-pressured games, and puzzle games. These are games where you can frequently jump in and out of and are usually played to kill time. Popular examples are Tetris, Flappy Bird and Candy Crush Saga.Educational games are ones with the intent of teaching children and students in a more interactive form and are sometimes called “gamified”. Some are also called “edutainment” which aims to educate through entertainment. Some are  educational or informational. Examples of educational games are The Oregon Trail and the Carmen Santiago series. Art games are developed with the intention of communicating a story and are designed to challenge or generate the emotion or empathy of the players. Most of these games are “indie” in nature. A few examples are Passage, Flower, and That Dragon, Cancer. Aside from these, there are many other genres for games such as adventure-action games, adventure, strategy, vehicle simulation, and more. There are also “advergames” –  ones that are used to advertise a product or organization: Christian video games that are more themed around Christianity and Chistian themes, exergaming that involves exercise and other body movements, maze video games, party video games, puzzle video games, and more. Aside from casual and indie games, there are also what are called mini-game, non-game, and programming. Video games are also subject to international content rating requirements. This is designed to help identify targ