Skip to content

The guide

12 Longest Incremental Games: From 400 Real Days to Multi-Year Idlers

The longest incremental games, measured honestly: 12 picks that take months or years, split into ones you can finish and ones that never end, with the evidence.

Source-checked guideMaintained by Maxwell PrehodaHow we choose

The longest incremental game with a fixed length is THE LONGING: its clock counts down 400 real days, even while the game is closed. The longest one most people actually finish is Antimatter Dimensions, which our catalog puts at 200 to 600 hours to its ending. For sheer collective playtime, Fundamental leads Galaxy with more than 1.3 million hours logged, and Legends of IdleOn describes itself as built for a multi-year experience.

Length in this genre is slippery, so each entry says what kind of long it is and what the evidence is: a fixed timer, a recorded ending, a developer's own claim, or player reports on Galaxy. Galaxy hour totals are the sum across every player, not a per-player figure; we use them as a signal of how long people stay, not as a time to beat. All figures are as shown on the source pages in November 2026.

01

THE LONGING: best for a fixed 400-day wait you can play or ignore

Platform: Steam · paid

What kind of long: a literal real-time clock. You are a lonely Shade, the last servant of a sleeping king, and your task is to wait 400 days until he wakes. The store page is clear that the countdown runs even when you stop playing and exit the game. You can start it and come back in 400 days, or explore the caves slowly, decorate your room and read classic literature in-game while the time passes.

It is $14.99 on Steam (often discounted), on Windows, Mac and Linux, and 92% positive across 6,788 reviews. Pick it if you want the longest game in the genre by a measure nobody can argue with.

Watch out for: The pace is the point: the Shade walks slowly and many actions take real hours. If you want to see things happen, this is the wrong game; if you want to forget about it for a year, it is the right one.

Read the profile →THE LONGING on Steam ↗

02

Antimatter Dimensions: best for the longest incremental with a real, reachable ending

Platform: Browser, Steam, Mobile · free

What kind of long: hundreds of hours of content to a finish. Dimensions produce dimensions, you reach Infinity, and the Steam page says that after Infinity the game has just begun: Eternity, Reality and further layers follow, with challenges and an automation scripting language along the way. Our catalog records 200 to 600 hours to the end.

It is free on the web, Steam and mobile, and 92% positive across 4,620 Steam reviews. Pick it if you want months of play that conclude, rather than a game you eventually abandon.

Watch out for: The Steam version added a shop, though the web version plays the same game for free. Several late walls take days of waiting.

Read the profile →Antimatter Dimensions on Steam ↗

03

Check Back: best for a complete game built around coming back daily for months

Platform: Browser · free

What kind of long: cooldowns and daily rewards. You click XP buttons that each have a cooldown, level up to unlock more buttons, open pet crates for boosts and collect daily rewards. Galaxy tags it long-term, which the site defines as over a month to completion, and one commenter reported finishing after 347 days.

The developer says the game is fully complete. It holds 4.4 stars from 557 ratings and around 439,000 total hours on Galaxy. Pick it as a second-tab game you will still be opening next summer.

Watch out for: There is little to do in any one session: that is the design. If you dislike waiting on timers, this is the wrong list entry for you.

Read the profile →Play on Galaxy ↗

04

Fundamental: best for the most-played game on Galaxy by total hours

Platform: Browser · free

What kind of long: a universe-scale idler balanced for regular check-ins. awWhy's game starts with a single particle and builds through Stages, Universes, Strange quarks, Vacuum types and Challenges. Its page says it is meant to be played while doing something else and balanced to give you something to do every 5 to 20 minutes.

It has around 1,345,000 total play hours across 547,000 plays on Galaxy, by far the largest figure we have seen there, with 4.5 stars from 919 ratings. Commenters report reaching the content wall after anything from a couple of months to 115 days.

Watch out for: Version 0.2.8 (March 2026) converts older Universes and resets progress for returning players. Check the changelog before loading an old save.

Read the profile →Play on Galaxy ↗

05

Legends of IdleOn: best for an account you will keep growing for years

Platform: Steam, Browser, Mobile · free-to-play

What kind of long: the developer's own words. The Steam page calls IdleOn a long-term idler made for those seeking a multi-year experience. You build an account of up to 11 characters, one of each class, and each works different skills, from Cooking and Alchemy to Construction, while you are away. New worlds keep arriving through updates.

Now listed on Steam as IdleOn - The Incremental MMO, it is free on Steam, web and mobile, and 77% positive across 29,910 Steam reviews. Pick it if you want the longest game on this list that is also social.

Watch out for: Free-to-play with optional purchases for boosts and pets. The store page says all classes, maps and skills are available without paying, but the shop is prominent and the review score is the lowest here.

Read the profile →IdleOn on Steam ↗Official site ↗

06

Rejected Draft: best for a 2026 web epic with months of content right now

Platform: Browser, Steam · free

What kind of long: months, per the developer. You play a doodle the Artist threw away, fighting rival sketches, choosing which enemies appear in your world and absorbing their powers before prestige-style resets. Its Galaxy page says the web version has months of content and differs from the Steam version.

Posted in April 2026, it already has around 596,000 total hours on Galaxy and 4.3 stars from 507 ratings. A Steam Early Access release is scheduled for November 11, 2026, and its store page also describes a months-long journey.

Watch out for: Developer replies on Galaxy say placeholder AI art is being replaced with community-drawn enemies, so not every sketch is community art yet. It is still in active development at version 0.97.

Read the profile →Play on Galaxy ↗Rejected Draft on Steam ↗

07

Evolve: best for restarting a civilization dozens of different ways

Platform: Browser, Mobile · free

What kind of long: many reset paths. Its README describes an incremental about evolving a civilization from primordial ooze into a spacefaring empire, combining clicker and idle elements with lots of micromanagement. Then you end that civilization and start again with a different race and different bonuses. Our catalog records six prestige layers.

It is free, open source under MPL-2.0, and actively developed. You can play it on this site, loaded from the developer's GitHub page. Pick it if you want a long game where each restart plays noticeably differently.

Watch out for: It is text-heavy, and the early micromanagement can feel like busywork until automation arrives. Export your save regularly; it lives in browser storage.

Read the profile →Evolve on GitHub ↗

08

The Silly Caverns: best for chasing ores rarer than one in a quadrillion

Platform: Browser · free

What kind of long: luck. You mine from nothing toward absurdly overpowered pickaxes, and ore rarities run from 1 in 30 to beyond 1 in 1,000,000,000,000,000, in four variants. The game is inspired by the Roblox game REx Reincarnated, and Galaxy commenters call it one of the site's most idle-time-hungry games for the rarest finds.

It has around 1,090,000 total hours on Galaxy and 4.3 stars from 844 ratings. Pick it if a single rare drop is worth weeks of waiting to you.

Watch out for: Its last update was in January 2025, and commenters note there is little tutorial. Progress at the rare end is pure chance.

Read the profile →Play on Galaxy ↗

09

Celestial Incremental: best for the biggest Modding Tree game still getting updates

Platform: Browser · free

What kind of long: a tree game that keeps growing. Built by a small team on The Modding Tree with its own music and lore, it adds things most tree games lack, like a buy-max toggle and a volume slider. Commenters mention idle grass growth, a Check Back section and even a bullet-hell space battle.

It has around 765,000 total hours on Galaxy and 4.2 stars from 735 ratings, and its latest update, v1.15, landed on October 31, 2026. Pick it if you liked The Prestige Tree and want something far larger.

Watch out for: Commenters describe the early game as grindy, with at least one timewall, and some find the Check Back section repetitive.

Read the profile →Play on Galaxy ↗

10

Farmer Against Potatoes Idle: best for more than 9,000 waves of mutated potatoes

Platform: Steam · free-to-play

What kind of long: a wave count you can measure. An amnesiac farmer fights sentient potatoes across 5 worlds of 9 areas of 100 waves, each with two difficulties, which the store page totals as over 9,000 waves. On the way you collect from over 250 visually different items and juggle around forty interlocking upgrade screens.

It is free on Steam and 95% positive across 8,191 reviews, one of the best scores among long idlers. Pick it if you want an endless game with a sense of humor and a lot of systems to unlock.

Watch out for: Free with in-app purchases, and Windows only. The inventory and equipment systems are big; the store page promises automation to keep them manageable.

Read the profile →Farmer Against Potatoes Idle on Steam ↗

11

Magic Research 2: best for a long text RPG idler that ends

Platform: Steam, Mobile · paid

What kind of long: a big, finishable campaign. You are a rookie wizard seeking the Philosopher's Stone, with more than 120 spells, over 250 transmutable items and a team of wizards who cast for you until almost everything is automated. Our catalog records an ending at roughly 50 to 120 hours.

It is $5.99 on Steam and 93% positive across 617 reviews. Pick it if you want weeks of play with a story and a finish line, not an endless account.

Watch out for: It is text-based and menu-heavy. Windows only on Steam.

Read the profile →Magic Research 2 on Steam ↗

12

Your Chronicle: best for a long text RPG with thousands of story actions

Platform: Steam, Mobile · paid

What kind of long: story volume. It starts in a village with your father telling you to be strong and save your mother, and the store page counts more than 3,000 unique story actions, still growing. Summoned monsters, automated dungeons and a Routine system with offline bonuses carry you through, and the ending changes with your choices.

It is free on Steam with in-app purchases, 80% positive across 2,738 reviews, and our catalog records 40 to 100 hours. Pick it if you want length that comes from plot rather than numbers.

Watch out for: The interface is plain text and buttons. The game is free-to-play now, with purchases available, so check the store before assuming what is included.

Read the profile →Your Chronicle on Steam ↗

How to choose a long incremental game

Decide what you mean by long before you commit months to it.

01

Decide if you want an ending

Games with a finish: THE LONGING, Antimatter Dimensions, Check Back, Magic Research 2 and Your Chronicle. Games that keep going: Legends of IdleOn, Evolve, The Silly Caverns and Farmer Against Potatoes Idle.

02

Decide how often you will check in

THE LONGING and Check Back need only occasional visits. Fundamental is balanced for something to do every 5 to 20 minutes. Antimatter Dimensions and Evolve reward active sessions early and idle play later. Our list of idle games with offline progress helps if you will be away for days.

03

Protect your save

A months-long browser save is only as safe as your browser storage. Export saves from web games (Antimatter Dimensions, Evolve, Fundamental, The Silly Caverns) to a file every week, or use the Steam version where one exists for cloud saves.

Start the long one today

If you want one recommendation with an ending, start Antimatter Dimensions in a browser tab tonight. If you want something that will outlast your current laptop, start IdleOn or Fundamental.

For hour ranges on many more games, short and long, use our time-to-beat table.

Compare how long incremental games take →

Common questions

What is the longest incremental game?

By a fixed timer, THE LONGING: its countdown runs 400 real days, even when the game is closed. Among games you finish by playing, Antimatter Dimensions is the usual answer, at roughly 200 to 600 hours in our catalog. Endless games like Legends of IdleOn have no maximum.

How long does it take to beat Antimatter Dimensions?

Our catalog records 200 to 600 hours to its ending, depending on how actively you play and how well you plan resets. Much of that is idle time.

Do you have to play THE LONGING for 400 days?

No. Its store page says you can start the game and simply come back after 400 days to see how it ends. Playing in between lets you explore and change what you find, but the clock runs either way.

Which long incremental games are free?

Antimatter Dimensions, Check Back, Fundamental, Rejected Draft, Evolve, The Silly Caverns and Celestial Incremental are free in the browser. IdleOn, Farmer Against Potatoes Idle and Your Chronicle are free-to-play with in-app purchases.

What makes an incremental game long?

Usually stacked prestige layers, timers, or rare drops. Our guide to the hardest incremental games covers the ones that are long because they are difficult, and our prestige guide covers layered resets.

Sources