[5][6] In 2003, founders Eike and Hendrik Klindworth and Michael Zillmer created and released the browser-based massively multiplayer online game Tribal Wars as a hobby project.

[12] In September 2009, the company's new empire-building browser game Grepolis started into an open beta with a limited number of users.

[15] In July, the company announced the launch of the open beta test of the Facebook game WestWars, based on The West.

[20] August saw the launch of the open beta test of Bounty Hounds Online, a client–basedscience fiction PC game, for which InnoGames had acquired exclusive marketing rights for Europe.

[23] In February 2013, InnoGames announced the opening of a new location in São Paulo, to further expand its market position in South America.

[24] In July, InnoGames announced that it was discontinuing work on the browser-based 3D seafarer simulation Kartuga and at the same time closing the development studio Ticking Bomb Games.

[31] September saw the launch the open beta of Tribal Wars 2, the official sequel of InnoGames' debut game.

[37] In October, Swedish media company Modern Times Group (MTG) acquired a total of 35% from InnoGames' founders and former investor Eight Roads Ventures (formerly FGPE), based on an enterprise value of €260 million.

[38] In February 2017, InnoGames announced the purchase of the turn-based strategy mobile game Warlords, which had been produced by the Berlin-based developer studio Wooga.

[43] In February 2019, InnoGames announced the release of its turn-based strategy game God Kings for iOS and Android devices.

[51] On the occasion of the game's 20th anniversary, the company announced that Tribal Wars had generated total sales of more than €180 million by June 2023.

[54] At the same time, InnoGames announced as part of the 15th anniversary of Grepolis that the title had now exceeded the €200 million mark in total lifetime sales.