Infinity Kingdom

Infinity Kingdom looks, at first glance, like every other city-builder strategy game in your ad feed: build a castle, train troops, join an alliance, conquer the map. What sets it apart on paper is its cast — Cleopatra, Julius Caesar, Merlin, and Robin Hood fighting side by side, backed by elemental dragons, in a bright cartoon world under attack by mechanical gnomes. It's been on Steam since 2021 and plays across PC and mobile. So is there a real strategy game under the charm, or just another timer-and-shop loop?

Short version: there's a solid, approachable strategy MMO here with a few genuinely fun systems, wrapped in the same monetisation model as the rest of its genre. It's a good fit for some players and an easy skip for others.

Quick verdict: Infinity Kingdom is worth trying if you enjoy city-building strategy MMOs, like collecting heroes and building synergies, and want something friendlier-looking than the usual grim war games. Skip it if you dislike build timers, alliance-dependent progression, or games where spending can accelerate progress significantly.

Key takeaways:

• A free-to-play cartoon-style strategy MMO from YOUZU, on Steam since July 1, 2021
• You rebuild a city in the land of Norheim and defend it against invading gnomes — and other players
• 50+ "Immortals" drawn from history and myth lead your troops, from Julius Caesar to Merlin
• Seven types of elemental dragons can be hatched, raised, and paired with Immortals for elemental bonuses
• Cross-platform play between PC and mobile
• "Mixed" Steam reviews, with criticism focused on monetisation and pacing

What Is Infinity Kingdom?

Infinity Kingdom is a free-to-play massively multiplayer strategy game developed and published by YOUZU (Singapore). You play as a lord in the land of Norheim, where an army of gnomes and their war machines broke through the northern defences and devastated the region. Your job is to rebuild your city, grow your army, and push the gnomes back — while every other lord on your server competes with you for land and resources.

It launched on Steam on July 1, 2021 and is also available on mobile, with cross-platform play so you can manage your kingdom from either.

What Makes Infinity Kingdom Different?

The genre staples are all here: building upgrades, research, troop training, gathering, and alliance warfare on a shared world map. Infinity Kingdom's twist is in who leads your armies. Instead of generic generals, you summon Immortals — more than 50 legendary figures from different civilisations, including Cleopatra, Julius Caesar, Merlin, and Robin Hood — each with their own skills, troop type, and role.

Layered on top are dragons. Seven types of elemental dragons can be hatched from eggs and raised into battle-ready companions. Assigning a dragon to Immortals that share its element activates elemental bonuses, so a big part of the strategy is building teams whose elements, troop types, and skills reinforce each other rather than just stacking your strongest units.

Immortals and Team Building

Immortals are the heart of your progression. You recruit them in the Hall of Immortals, level them, upgrade their equipment, and unlock their skills. Each one has a role and troop specialisation, and their abilities matter in both PvE campaigns and battles against other players.

Team composition is where the game rewards thought. Combining complementary Immortals, matching them with the right dragon, and considering which elemental bonuses apply can swing fights you'd otherwise lose on paper. If you've enjoyed the commander-pairing system in Rise of Kingdoms, this will feel familiar — with a lighter, more colourful tone.

Dragons and Elements

The dragon system is one of the game's most distinctive features. You claim dragon eggs, hatch them, and raise the hatchlings into powerful elders, upgrading their attack and defence stats and unlocking skills along the way. Each dragon belongs to an element, and pairing it with Immortals of the same element activates exclusive buffs for that unit.

It's a collection system with real tactical weight, and it gives long-term players a meaningful goal beyond simply upgrading buildings.

Battles, Exploration, and Alliances

Battles play out with your chosen Immortals leading troops into the fight, whether you're clearing gnome camps, running PvE campaigns, or attacking other players' cities. Outside combat, the world map has Ruins scattered across it — send scouts to investigate them and you'll collect Stele Shards that unlock pieces of Norheim's history in your city's Monuments, along with rewards.

As with every game in this genre, alliances are where the late game lives. Coordinating with other players for protection, shared attacks, and territory is essential once your server matures, and solo players will find progress slower and riskier.

Who Is Infinity Kingdom For?

This fits players who enjoy city-builder strategy MMOs and want a lighter, more playful tone than the usual medieval or military themes. Hero collectors who like experimenting with team synergies will get the most out of the Immortal and dragon systems, and the cross-platform support makes it easy to check in from your phone between longer PC sessions. If you like the base-building side but want a more survival-focused theme, Tiles Survive is another option worth comparing.

It's a weaker fit if you want a strategy game you can play on your own terms. Build timers, daily routines, and alliance politics shape the pace, and players who don't want to engage with those systems tend to bounce off.

What You Should Know Before Playing

Infinity Kingdom is light on hardware: the official minimum is a 64-bit Windows 7 PC with 2 GB of RAM, DirectX 10, and about 2 GB of storage. Almost any PC from the last decade can run it, and it's also available on Mac through Steam.

Be realistic about monetisation. The game is free to play, but like most strategy MMOs it sells speed-ups, resources, and hero progression, and its Steam reviews sit at "Mixed," with monetisation and pacing among the most common complaints. You can enjoy it without spending — especially as part of an active alliance — but competing at the very top of a server is a different matter.

Pros:

• Charming cartoon art style that stands out in its genre
• 50+ historical and mythological Immortals with distinct roles and skills
• Dragon raising and elemental bonuses add real depth to team building
• Cross-platform play between PC and mobile
• Runs on almost any PC

Cons:

• Familiar build-timer and resource loop
• Spending can significantly accelerate progress
• Late game depends heavily on joining an active alliance
• "Mixed" Steam reception
• Can feel slow for players used to more active strategy games

Is Infinity Kingdom Worth Playing in 2026?

If you enjoy the genre, yes — it's an approachable, good-looking strategy MMO with enough unique systems in its Immortals and dragons to stand apart from its competitors. It's especially easy to recommend as a relaxed, play-in-short-sessions strategy game you can carry between your PC and phone.

If you've already tried a few city-builder MMOs and found the timers and spending pressure tiresome, Infinity Kingdom won't change your mind. Treat it as a free, low-commitment try and you'll know within a few days whether its loop clicks.

How to Start Playing Infinity Kingdom

Infinity Kingdom is free to play on PC through the official download, and it's also available on Steam and on iOS and Android. Your progress can carry between PC and mobile, so you can manage your kingdom from either.

FAQ

Is Infinity Kingdom free to play? Yes. It's free to download and play, with optional purchases for resources, speed-ups, and hero progression.

Is Infinity Kingdom on PC? Yes. It's been on Steam since July 1, 2021, for Windows and Mac, and it's also on mobile.

Does Infinity Kingdom have cross-platform play? Yes. Steam lists cross-platform multiplayer, and you can play the same kingdom on PC and mobile.

Who are the Immortals in Infinity Kingdom? They're the heroes who lead your troops — more than 50 legendary figures including Cleopatra, Julius Caesar, Merlin, and Robin Hood.

How do dragons work in Infinity Kingdom? You hatch and raise dragons from seven elemental types. Assigning a dragon to Immortals of the same element activates elemental buffs in battle.

Is Infinity Kingdom pay-to-win? It's free to play, but spending can speed up progress significantly, which matters most in competitive PvP at the top of a server.