Infinity Kingdom is a strategy game from YOUZU that mixes city building with Immortals, heroes drawn from history and myth. This guide uses the publisher’s own pages: the Steam store page, the official website, its patch notes and its forum. It separates what they confirm from the guide’s own advice and from what we could not verify. Pages were read in November 2026, and the game changes with each version.

What the game is

Steam describes Infinity Kingdom as a cartoon-style MMO strategy game set in the land of Norheim. You are a lord who defends the land against gnomes and protects yourself from other players who invade. YOUZU (Singapore) is listed as developer and publisher on Steam, where the game was released on 1 July 2021. The official website says there are more than 50 Immortals from various civilizations, 7 types of elemental dragons and three kingdoms with different temperaments to choose from.

Confirmed by the publisher

The core loop. Steam describes rebuilding the city, then growing, building and training faster. You summon Immortals at the Hall of Immortals with the Philosopher’s Stone. Steam names Cleopatra, Julius Caesar, Merlin and Robin Hood. Ruins on the world map give Stele Shards through scouts, and you spend them at your territory’s Monuments.

Elements. The official Strategy page lists seven elements: Earth, Fire, Water, Lightning, Wind, Holy and Shadow. Patch notes of 9 October 2025 also list a Chaos dungeon. Steam says a dragon with the same element as your Immortals activates exclusive elemental buffs in battle.

Formations. The official website says to arrange your Immortals according to their troop type, element and position. The Strategy page describes an Elemental Aura that applies when you deploy units of the same element, “Immortals and Dragons” included: deploying 3 units of the same element gives the whole troop Immortal Physical Defense +20% and Immortal Magical Defense +20%. Deploying 4 gives Physical Attack +20% and Magical Attack +20%. Deploying 5 gives Troop HP +10%. The Strategy page also states how elements counter each other: “Water beats Fire, Fire beats Wind, Wind beats Lightning, Lightning beats Earth, Earth beats Water, Shadow beats all of the above, and Holy beats Shadow.” An official diagram on the same page draws the same loop with the label “Counters”. A second official diagram shows the troop types Shieldmen, Spearmen and Cavalry linked in a loop by arrows and says Bowmen neither beat nor are beaten by any other troop type. It does not explain its arrows in text, so we do not state who counters whom. That page’s content carries 2020 and 2021 dates, so these are the rules it described then, not a guarantee that they work the same today. Check the figures in the game.

Progression gates. Upgrades open features, and some features need a Castle level. Patch notes of 30 July 2026 introduced the alliance Spar with a Castle level 15 requirement, and notes of 3 September 2026 changed it to level 5. Notes of 21 September 2026 put a Castle level 15 requirement on two parts of the Gilded Club event. The 9 October 2025 notes say that, in the Legendary Season, upgrading Barracks unlocks higher-tier soldier ranks, Academy buildings unlock research for new technologies, the Tower of Knowledge unlocks new skills and Walls unlock higher-tier fortification.

Alliances. An official forum guide from 2020 says players donate resources to Alliance Technology, and members receive its bonuses once research ends. It says each help from allies reduces a task by 1 minute, and that allies can rally against Gnome Bosses. The forum does not name the author as staff. Alliance Supremacy, an alliance competition, was added in the patch notes of 4 September 2025. Later notes mention an Alliance Championship, and we found no official statement on how it relates to Supremacy.

Elements in events. In the Elemental Domain event (9 October 2025 notes), each dungeon accepts only Immortals and dragons of its element.

The guide’s own advice

These points are editorial, with the reasoning given.

• Pick your dragon and your Immortals together. Steam ties the dragon’s element to buffs, and the Elemental Aura counts dragons as units of their element. This is the guide’s reading of those two facts, not a publisher recommendation.
• Read each Immortal’s description before you spend. Values change with updates, so the in-game text is the one source that stays current.
• The sources consulted do not specify an order of play. Steam lists features without ranking them, so this guide gives no build order.

Playing on PC

The Steam page lists these system requirements for Windows. A note on the page says the Steam client supports only Windows 10 and later from 1 January 2024.

• Minimum: a 64-bit processor and operating system, 2 GB of RAM, DirectX 10, a broadband connection and 2 GB of storage.
• Recommended: a 64-bit processor and operating system, Windows 10, 8 GB of RAM, DirectX 11, a broadband connection and 4 GB of storage.

macOS is listed too. Check the page for the current figures.

What we could not verify

We found no official source for these claims, which older guides often state, so this guide does not make them:

• a fixed building or research order, such as “Castle first, then Academy”;
• resource rules: storehouse caps, alliance income multipliers, daily quests as a core income;
• rankings of Immortals and any “best team”;
• the size of any elemental advantage: the Strategy page says which element counters which, but we found no percentage;
• which troop type counters which: the official troop diagram shows arrows that its text does not explain;
• the Holy City: it appears in none of the official pages we read, and the alliance event is named Alliance Supremacy there;
• what a free player can reach, and in how long.

Immortal slots and the Elemental Aura units. The official unit guides on the Strategy page list four Immortals per recommended lineup. The Elemental Aura counts “units of the same element (Immortals and Dragons)”, so four Immortals plus a dragon of the same element would make five units. That sum is our reading, not a statement of the page. Check your formation screen in the game. A rule of “never more than two elements” appears in none of the official pages we read.

Separate Gimaxo guides cover Immortals, PvP and resource farming.

Sources

Named here as plain text. Pages read in November 2026.

• Steam store page, Infinity Kingdom (YOUZU)
• Infinity Kingdom official website, home page and Strategy page
• Infinity Kingdom official patch notes: v2.8.7 (4 September 2025), v2.8.8 (9 October 2025), v2.9.8 (30 July 2026), v2.9.9 (3 September 2026), v3.0.0 (21 September 2026)
• Infinity Kingdom Official Forum, “Infinity Kingdom Guide: Alliance Features”, 15 September 2020 (author not identified as staff)