You can play games on a phone. 
You can play games on many small tools. 

Mobile games are video games played on portable tools. 
Early mobile games were quite simple. In 1997, Nokia released a game called Snake. It was on 350 million devices. Later, app stores changed how we play. The Apple App Store arrived in 2008. It made it easy to find new games. Now, mobile gaming is the biggest part of the game industry. It made up 49% of all game money in 2025.
There are different ways to pay for games. Some games are premium. This means you pay for the whole game at once. Other games use a "freemium" model. These games are free to try. You can pay to unlock more of the game. Some games are free-to-play. They might use "stamina" to limit how much you play. You can buy items to get more energy. 
Mobile games are video games played on portable devices. You can play them on smartphones, tablets, or even handheld consoles. 
There are many ways that these games work and reach players. In the past, people used short text messages to get games. Later, they used the web or wireless signals like 3G and Wi-Fi. 
Mobile gaming has a long and interesting history. The earliest known mobile phone game was a version of Tetris in 1994. In 1997, Nokia released a famous game called Snake. This game was on 350 million Nokia devices worldwide. In 1999, a platform called i-mode launched in Japan. This allowed people to download games onto their phones. Large companies like Konami and Namco began making games for these devices. 
Developers use different ways to make money from their games. Some games are "premium," which means you pay for the whole game at once. Other games use a "freemium" model. This means you can try a small part for free. You might pay to unlock the rest of the game. Some games are "free-to-play" but use a "stamina" system. 
Calculator gaming is another special way to play. Students often use powerful graphing calculators for math class. However, these tools can also act like small game consoles.
A mobile game is a video game played on a portable device. This category includes many different types of hardware. Players might use smartphones or feature phones. They might also use tablets, personal digital assistants (PDAs), or handheld game consoles. Even graphing calculators can host mobile games. 
Mobile games reach users through various technological methods. In the early days, players obtained games using SMS short codes. Later, manufacturers and network operators allowed downloads via the Web. Users could also download games through the air using GPRS, 3G, or Wi-Fi. 
The history of mobile gaming began in the late 20th century. The earliest known game on a mobile phone was a Tetris variant on the Hagenuk MT-2000 in 1994. In 1997, Nokia launched the famous game Snake. This game was pre-installed on many devices. At one time, Snake was found on 350 million devices worldwide. In 1999, NTT Docomo launched the i-mode platform in Japan. This allowed users to download games directly onto their handsets. Major developers like Konami and Namco began creating content for these mobile platforms.
As mobile devices became more powerful, the games became more sophisticated. This happened because of exponential improvements in hardware. Manufacturers improved displays, processing power, and storage capacity. They also improved network bandwidth and operating system functionality. By the mid-2000s, many games were built on the Java ME platform. This allowed a wide variety of games to run on different devices. The launch of the iPhone in 2007 further changed the industry. The iPhone offered larger memory and multitasking abilities. It also introduced touchscreens, which were perfect for casual games.
Developers use several different models to earn money from their games. The premium model is the traditional way of selling games. In this model, a user pays for the full game upfront. The freemium model is a "free to try" approach. A player can play a small portion of the game for free. They can then make a one-time in-app purchase to unlock the rest. 
Specific games have helped define these new ways of playing. In 2012, Candy Crush Saga and Puzzle & Dragons became very popular. They used the stamina-like gameplay found in social-network games. This helped establish the freemium model as a common industry standard. Other trends include hyper-casual games like Flappy Bird and location-based games like Pokémon Go. Mobile gaming has even changed the broader market. It has drawn demand away from traditional handheld consoles. For example, Nintendo and Sony saw drops in sales for their 2011 handhelds compared to their 2004 models.
Another unique form of mobile gaming is calculator gaming. This involves playing games on programmable graphing calculators. In 1980, the Casio MG-880 included a built-in "Invaders" game. By the 1990s, calculators like the HP-48 and TI-82 became common among students. These devices could be programmed using languages like TI-BASIC or assembly language.
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