Summoners War: The Korean Mobile Game That Conquered the World Before Korea Noticed

When Korean gamers talk about the biggest mobile games their country ever made, the conversation usually turns to Lineage M. But ask the rest of the world, and the answer is often different: a turn-based game about collecting monsters on floating islands, made by a company that three university students founded in 1998.

Summoners War: Sky Arena launched worldwide on June 12, 2014, from Com2uS. By June 2017 it had grossed more than $1 billion, and $890 million of that came from outside South Korea. More than a decade later it has been downloaded over 200 million times and is still being updated. This is how a Korean mobile game became a global one long before "global one-build" was a buzzword.

A company born for phones

Com2uS was founded in 1998 by three Korea University students, Park Ji-young, Lee Young-il and Hyeon Yu-jin, with a goal that sounded odd at the time: to make games for mobile phones. This was the era of feature phones, tiny screens and keypad controls, years before the iPhone. The company grew steadily and listed on Korea's KOSDAQ market in 2007.

It also learned early how to work with partners abroad. In September 2008, Com2uS agreed to develop games for Disney Interactive to publish in the United States, starting with Disney Puzzle Family that same month.

In October 2013, rival Korean mobile publisher Gamevil bought a large stake in Com2uS for about $65 million, bringing two of Korea's mobile pioneers under one roof. Gamevil renamed itself Com2uS Holdings in November 2021.

The game

Summoners War is easy to describe and hard to put down. You summon monsters from a pool of hundreds, each with an element, a star grade and a set of skills. You build teams, fight turn-based battles in dungeons and in the Arena against other players, and spend months improving your favourite monsters through levels, evolution and rune sets.

• Monsters range from 1 to 5 stars and can be evolved to 6 stars, with a level cap of 40.
• The story mode has 20 episodes of seven stages each.
• The game is available in 14 languages, which helped it spread fast.

What made it stick was depth. Runes, the equipment you attach to monsters, create endless combinations, and the Arena rewards players who study the meta. Reviewers praised the combat and also warned about the grinding, which is a fair summary of the game to this day.

Going global by design

Most Korean publishers of the time built for Korea first and translated later. Summoners War was designed to travel, with a worldwide launch and support for many languages, and the results showed on the map:

• Top 10 on Apple's App Store in more than 84 countries
• Top 10 on Google Play in more than 54 countries
• $1.35 billion in App Store and Google Play revenue by August 2018, including about $370 million from the United States and $277 million from Japan

Growing the community

Com2uS kept adding reasons to come back:

• Guilds arrived on July 1, 2015, followed by guild battles and a rewards shop on March 9, 2016.
• Downloads passed 50 million by November 2015, 90 million by March 2018, and 200 million by around August 2023.
• In 2018, the Tartarus Labyrinth update added a new end-game challenge.

The game also collected awards at home, including an Excellence Prize and a Technology Award at the 2014 Korea Game Awards, and an OGN G-Rank Global Special Award in 2016.

Why it lasted

In WGC's view, three things explain why Summoners War is still around when most 2014 mobile games are long gone.

First, it respects your time in a particular way. A battle takes a minute or two, so you can always make a little progress, yet the long-term goals, a perfect rune set or a rare five-star monster, take months. That mix of short sessions and long ambitions is exactly what keeps people playing a mobile game for years.

Second, it is a social game disguised as a single-player one. Guilds, guild battles and the Arena mean your monsters are always being measured against someone else's, and players trade advice, team builds and rune tips constantly.

Third, Com2uS never stopped feeding it. Crossovers like Street Fighter, new end-game modes like the Tartarus Labyrinth and, eventually, a PC version kept the game in the conversation. It is the same lesson Lineage M teaches in Korea: the biggest mobile games are not launched, they are run.

The spin-offs

Com2uS has tried to turn one hit into a universe. Summoners War: Lost Centuria, a real-time strategy spin-off, arrived in 2021, and Summoners War: Chronicles, an open-world MMORPG set in the same world, followed in 2022. Neither replaced the original, but together they show how valuable the IP has become.

The company has also branched into new areas. It partnered with Skybound Entertainment to make The Walking Dead: All-Stars, launched globally on August 31, 2022, and acquired a string of studios between 2019 and 2021.

Today, Com2uS is still making new games for the Korean market as well as the world. In August 2026 it launched Zeus: God of Pride, a Greek mythology MMORPG that earned about $35 million in its first 30 days according to Sensor Tower, the best first month of any MMORPG released in Korea in 2026. It is a very different game from Summoners War, aimed squarely at Korea's MMORPG audience, but it shows a company that still knows how to launch a hit.

By the numbers

• 1998: Com2uS founded by three Korea University students
• June 12, 2014: Summoners War launches worldwide
• $1 billion+: gross revenue by June 2017, $890 million of it outside Korea
• $1.35 billion: App Store and Google Play revenue by August 2018
• 84: countries where it reached the App Store top 10
• 200 million+: downloads by 2023

What to play next

If you have never played it, the original Summoners War: Sky Arena is still the place to start, now on PC as well as phones. Expect a slow, generous opening, a confusing rune screen for the first week, and an Arena that will humble you until you learn which monsters the community rates. Fans of the world can try Summoners War: Chronicles for an MMORPG take. And if you want to see what Com2uS is building for Korea today, Zeus: God of Pride is its 2026 MMORPG.

WGC's take: Korea's mobile story is usually told through Lineage and the domestic charts. Summoners War is the reminder that a Korean studio cracked the global market more than a decade ago, by designing for the whole world from day one. Many of today's Korean publishers chasing overseas growth are following a path Com2uS walked first.