The Ants: Underground Kingdom
Strategy · StarUnion
The Ants: Underground Kingdom screenshots
The Ants: Underground Kingdom is a free strategy game from StarUnion, released in April 2021 and built around a simple premise: a queen ant has sent out a distress signal, and you are the ruler who answers it. From a single haven you guide a colony through a world where survival is not guaranteed, expanding an anthill and pushing back against whatever threatens it. The main reason to consider it is the mix of management and conflict it puts on the table, with an alliance layer that turns a solo building project into something more social.
It has drawn a large audience, with more than 50 million installs and a 4.2 average across over a million ratings, which suggests the formula has connected with a lot of people. The game is rated for Everyone, though the terms of use set the minimum age at three, and it is an online title, so a network connection is part of the deal rather than an optional extra. If you like the idea of running a colony that grows from a vulnerable outpost into a force in the wider realm, this is the pitch.
Digging in: what you actually do
The core loop starts with survival. You construct the anthill, protect the queen and gather enough resources to keep the colony alive in an environment that is not friendly to it. Tunnels connect the different anthills, and where you place them matters, so there is a spatial planning element rather than a simple build menu. I would expect the early hours to be about securing a foothold and making decisions that shape how the colony develops later.
From there the game opens up into combat power. Hatching mutated eggs yields special ants, and controlling the kingdom grows with the number you raise. Those ants are your answer to the dangers the colony faces, and they sit alongside a second system: taming the other insects that share the land. A tamed insect can fight, or it can develop the anthill from within. That dual purpose is the part I find most interesting, because it makes the creatures you collect useful in two different ways.
Strategy and wisdom are the tone the game aims for. You are not just clicking through a build queue; you are deciding which eggs to hatch, which insects to tame and where the tunnels should run. Whether that depth holds up over months of play is something the developer pitches as the appeal, and it is the kind of promise that strategy players tend to judge for themselves.
Alliances and the fight for the realm
The social layer is where the game widens out. Alliances let you join forces, back your members and fight as one. The developer describes this as ruling the ant kingdom with your allies, and the highest goal is the Tree of Abundance: you fight alongside your alliance to seize the Squirters and claim the tree, which makes you king of the entire realm. Rewarding allies and punishing enemies is part of that endgame picture. For anyone who enjoys coordinated group play, this is the part that gives the game its long-term shape.
Because it is an online game, the alliance side is not a background feature; it is central to how the later game is meant to work. Instant online customer service is offered through official channels on LINE, Discord, Facebook and TikTok, plus a support email. I would treat the alliance system as the main reason to stay past the early building phase, since it is what turns individual progress into something you share with other people.
The realm is not static. Recent updates have touched the seasonal layer, including the ability to dismiss Towers and Fortresses during seasons, which points to a rotating map of objectives rather than a fixed one. The same update reworked how a special ant's first skill looks once it is ascended and made the regular attributes gained from that ascent show up in battle reports, and it also adjusted the visuals of the Special Ant Awakening system. Taken together, these are the kinds of changes that matter to players who follow the meta closely rather than to someone just starting out.
What it costs and what it needs
The download is free and there are no ads. Some items in the game are not free, so in-app purchases are part of the design, and the developer states plainly that the game includes paid items. I would go in expecting a free-to-play strategy title where spending exists as an option within the economy.
Devices need network access because this is an online game, so a network connection is a practical requirement worth knowing before you commit time to a colony that lives on a server.
The player this colony is built for
This is a game for people who like management with a military edge. If you enjoy planning where things go, deciding what to hatch or tame next and watching a base grow from fragile to formidable, the structure here is familiar and the ant theme gives it a distinct flavor. The alliance and Tree of Abundance content adds a competitive layer that rewards players who show up regularly and coordinate with others.
It is also a game that asks for patience. The loop involves building, expanding and fighting over a realm, and the seasonal updates suggest a long-running service rather than a story you finish. Players who prefer a tight single-player campaign with a definite end may find the open-ended, alliance-driven structure less satisfying. What the developer is selling is the sense of running a kingdom alongside other people, and that is the experience to weigh against the time it asks for.
A colony worth settling into?
The Ants: Underground Kingdom has the ingredients of a durable strategy game: a clear fantasy, a build-and-expand loop, collectible special ants, tameable insects with two uses and an alliance system tied to a realm-wide objective. The scale of its audience and its steady updates suggest it is being actively supported, and the seasonal changes show the developer is still tuning the competitive layer. For a free download, there is a lot of structure here to explore.
The reservations are the ones that come with the genre. It is online, it includes paid items, and its appeal depends on how much you enjoy coordinating with an alliance over the long term. I would recommend it to strategy players who like base building, creature collection and group competition, and who are comfortable with a game that expects a connection and offers purchases. If that describes your taste, the queen's distress signal is worth answering.
The short verdict
A free, online strategy game for players who enjoy colony building, special ant collection and alliance warfare.
What's new in version 3.102.0
[New Content & Optimizations] 1. Optimized the Dismiss function for Towers and Fortresses in the seasons. 2. Optimized the art display effect after a Special Ant's 1st skill is ascended. Additionally, the regular attributes increased after the skill ascent will now be displayed in battle reports. 3. Optimized the art display effect of the Special Ant Awakening system. Check more details of the update in-game!
App specs
- Version3.102.0
- UpdatedSeptember 28, 2026
- Downloads50M+
- RequiresAndroid 6.0+
- PriceFree
- Age ratingEveryone
The Ants: Underground Kingdom: frequently asked questions
What do you do in The Ants: Underground Kingdom?
You take the role of ruler after a queen ant sends out a distress signal. Your job is to build the anthill, keep the queen safe and collect resources so the colony survives. As you progress, you expand the anthill, plan tunnels between colonies and build up combat power with special ants and tamed insects.
How do special ants work?
Hatching mutated eggs yields special ants, and the more you raise, the more the kingdom answers to you. Recent updates have changed how a special ant's first skill looks once ascended, and the regular attributes gained from that ascent now show up in battle reports. The Awakening system for special ants also received a visual update.
Can I play without an internet connection?
No. Devices need network access because this is an online game, and the colony lives on a server, so the alliance and realm content depends on being connected.
Is the game free, and does it have ads?
The download is free and there are no ads. Still, not every item is free, so in-app purchases are part of the economy. The terms of use and privacy policy set the minimum age at three.
What is the Tree of Abundance?
It is the realm-wide objective at the top of the alliance game. That power lets you treat allies well and enemies badly, spreading your legend through the kingdom.
Pros
- Free to download with no ads
- Deep colony building and tunnel planning
- Special ants hatched from mutated eggs
- Insects can fight or work in the anthill
- Alliance play tied to a realm objective
Cons
- Some items in the game are not free
- Requires a network connection to play
- Open-ended alliance play asks for regular time
Download The Ants: Underground Kingdom
by StarUnion
Free · In-app purchases · Official store listings