What Is an Autobattler? The Auto-Chess Genre Defined
An autobattler is a strategy game where you spend each round buying and positioning units on a board, then watch them fight automatically against another player’s board. You don’t control the units in combat — you control the team composition and the placement. The genre took off in January 2019 with a Dota 2 custom map called Dota Auto Chess, and within months it had spawned standalone games from Valve, Riot, and Tencent. Here’s what it actually is and why it caught fire so fast.
Key takeaways
- An autobattler is a turn-based strategy game where you build a team in a shop phase, then watch it fight automatically.
- The genre originated with Dota Auto Chess, a January 2019 custom map for Dota 2 by Chinese team Drodo Studio.
- Standalone games followed within months: Teamfight Tactics, Auto Chess (mobile), Dota Underlords, and Hearthstone Battlegrounds.
- Core ingredients: a shop you buy units from, a board you place them on, automatic combat, and synergies between unit traits.
- The genre’s defining tension is between “leveling up” (more units, weaker each) and “rolling” (rerolling the shop to find rare units).
The core loop
An autobattler round has two phases. First, the planning phase: you have a short timer (usually well under a minute) and some gold. You buy units from a randomized shop, position them on your board, and decide what to upgrade. Second, the combat phase: the planning phase ends, and your board fights another player’s board automatically. The winner deals damage to the loser. You lose health each round you lose. When your health hits zero, you’re out. Last player standing wins.
Games are typically 8 players in a free-for-all, and a full match commonly runs half an hour or more. Opponents rotate from round to round within the lobby. You see all your opponents’ boards on a minimap or rotating display, so you can prepare counters.
The genre’s defining inventions
Shared, randomized shops
The shop is the engine. Each round you can spend gold to refresh a list of 5 units drawn from a shared pool. Drawing the same unit multiple times lets you combine three copies into a stronger version (a “two-star” version), and three two-stars into a three-star. So the same shop randomization that frustrates you also creates winning streaks when you hit your needed unit three rounds in a row.
Critically, the unit pool is shared across the lobby. If another player is buying the same unit you need, copies of it become rarer in your own shop. This adds an information warfare layer — competent players read what their opponents are building from what’s not appearing in the shop.
Trait synergies
Every unit has two or three traits (origin and class, typically). Having multiple units of the same trait on your board activates trait bonuses — for example, fielding enough Warriors might grant extra armor, while a group of Knights might earn damage shields. Exact thresholds and effects vary by game and by set. The game becomes a constraint satisfaction puzzle: which traits do you have enough cheap units to activate, and which would you rather skip?
This is what makes each game feel different. With dozens of traits across a roster, each match’s high-value compositions depend on what the shop happens to offer.
The level / roll tension
You spend gold on three things: buying units from the shop, refreshing the shop (“rolling”), or leveling up (which expands the size of the army you can field, but doesn’t directly buy units). The strategic puzzle is balancing these three sinks. Level up early and you can field more units, but they’ll be lower-tier. Roll down at the right level and you can fish for a specific high-cost unit. Save gold and you earn interest, but you can’t deploy a strong board against current threats.
The best players don’t play one strategy — they read the lobby and pivot based on what’s available.
Where the genre came from
Drodo Studio, a small Chinese team, released Dota Auto Chess as a custom Dota 2 mod in early January 2019. It used Dota’s hero roster and engine but introduced the autobattler loop. It exploded within weeks, reaching millions of players by spring, and larger studios soon started building their own versions.
Valve and Drodo held talks but ended up building separate games: Valve made Dota Underlords while Drodo released a standalone Auto Chess with non-Dota art. Riot launched Teamfight Tactics (TFT) inside League of Legends in June 2019. Blizzard released Hearthstone Battlegrounds in November 2019. Within a single year, the genre went from custom map to a category with four major commercial games. The Wikipedia entry on auto battler covers the chronology in more detail.
The games that defined the genre
Dota Auto Chess (January 2019)
The originator. A custom Dota 2 map by Drodo Games. Uses Dota heroes (with proper names and visual assets) on an 8×8 board. The shop-place-fight loop and the combine-three-to-upgrade mechanic were both established here. It stayed available as a custom map, though most players moved to one of the standalones.
Teamfight Tactics (June 2019)
Riot’s standalone autobattler, built into the League of Legends client. Uses League champions and a “Sets” system that replaces the unit roster every few months, so the meta is in constant flux. TFT is widely seen as the genre’s biggest game, helped by its steady content cadence and League’s huge player base. Has both PC and mobile versions (mobile arrived in 2020), free.
Auto Chess (2019, mobile)
Drodo’s official standalone, separated from Dota IP. Released for mobile first, later PC. Uses a custom roster of generic-fantasy characters. Smaller player base than TFT but the closest game to the original Dota Auto Chess experience.
Dota Underlords (June 2019)
Valve’s standalone, built using the Dota IP that Drodo couldn’t use after the split. It launched in June 2019 and left early access in early 2020. Polished and free, but Valve stopped meaningful updates soon after, and the game has been on life support since.
Hearthstone Battlegrounds (November 2019)
Blizzard’s reinterpretation, played inside Hearthstone. Uses Hearthstone minions and adds Heroes — each player picks a hero with a unique passive ability at the start of the game. The hero choice gives Battlegrounds a distinct strategic identity, and it remains one of the best-known autobattlers, with new content and balance updates ongoing.
Why the genre caught fire
Three reasons. The matches are spectator-friendly — units fighting on a fixed board are more legible than MOBA team fights, which made the genre broadcast well on Twitch. The input demand is low — you’re making decisions, not executing mechanics — which makes the genre accessible on mobile and to casual players. And the formula is portable for developers: once you have a roster with traits, building a new autobattler is mostly content design.
The genre in 2026
The boom has settled. TFT and Battlegrounds have consolidated their position; Underlords is on life support. Newer entries — Mechabellum, Backpack Battles — explore the design space in different directions. The autobattler is a mature genre with an actively engaged player base. If you’ve never tried one, TFT and Battlegrounds are both free in your existing game launchers. For something quicker between matches, the Chrome Dino game at the top of this site is the no-decision palate cleanser.
Frequently asked questions
What does “autobattler” mean?
It refers to the genre’s defining feature: combat resolves automatically after the player finishes positioning their units. The “battler” fights itself (“auto”). The player’s role is in team composition, not direct unit control.
Is autobattler the same as auto chess?
“Auto chess” was the original genre name, derived from Dota Auto Chess. “Autobattler” emerged as a more neutral term as the genre expanded beyond chess-themed games. The two terms refer to the same genre in 2026.
What’s the best autobattler to start with?
Teamfight Tactics if you have an existing League of Legends account; it has the most polish, the most players, and constant content updates. Hearthstone Battlegrounds if you’re already in Hearthstone. Both are free.
Are autobattlers free to play?
The big ones are free to play. TFT and Auto Chess mostly sell cosmetics and passes. Hearthstone Battlegrounds is free too, but its paid Battlegrounds pass adds perks such as extra hero choices at the start of a match, so check what a game sells before you assume everything is cosmetic. Paid entries such as Backpack Battles also exist.
How long does an autobattler game last?
A full 8-player lobby often runs half an hour or more, and the game ends when one player remains. In TFT’s ranked mode a top-4 finish earns rank, and players knocked out early can leave well before the match ends.
The bottom line
An autobattler is the strategy genre that figured out you don’t need to click during the fight to make it interesting — you just need the build-and-watch loop to be tight enough that placement matters. Dota Auto Chess proved the formula in 2019, the major studios cloned it within months, and the genre has been a steady presence ever since. If you like strategy games and have never tried one, an evening with TFT or Battlegrounds is a low-cost experiment that often pays off.
