The Game Census
Underworld Idle cover art

Underworld Idle

Aleksandr Golovkin · 2023-02-02

Steam

IndieStrategyFree To Play

Modes: Single player

Releases: May 06, 2021 (PC (Microsoft Windows))

An idle dungeon management game, where high tier units can create low tier units.

Underworld Idle is an Indie, Strategy, Free To Play game released in 2023, priced at free-to-play, with an estimated 200,000 .. 500,000 owners and a Mostly Positive review sentiment (71% of 1364 reviews).

182
playing now
71%
positive of 1.4k reviews
Mostly Positive
steam's rating (official)
200,000–500,000
owners (SteamSpy est.)
platinum
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
Free
steam price (US)

182 players in-game as of 2026-10-14 13:00 UTC (census sample)

Health check

Quietly active
  • · 182 players in-game at the last census sample.
  • · 113 reviews in the last 8 weeks (~14/week).
  • · Review velocity down 14% vs the prior 8 weeks.
  • · Top 9% of 49,583 Indie games in the census by review count.

Health tier since 2026-08-31

Review momentum

PositiveNegative
888820212026Week of 2021-05-01: 76 positiveWeek of 2021-05-01: 42 negativeWeek of 2021-06-01: 45 positiveWeek of 2021-06-01: 4 negativeWeek of 2021-07-01: 27 positiveWeek of 2021-07-01: 19 negativeWeek of 2021-08-01: 25 positiveWeek of 2021-08-01: 8 negativeWeek of 2021-09-01: 17 positiveWeek of 2021-09-01: 6 negativeWeek of 2021-10-01: 15 positiveWeek of 2021-10-01: 7 negativeWeek of 2021-11-01: 63 positiveWeek of 2021-11-01: 14 negativeWeek of 2021-12-01: 12 positiveWeek of 2021-12-01: 6 negativeWeek of 2022-01-01: 31 positiveWeek of 2022-01-01: 9 negativeWeek of 2022-02-01: 23 positiveWeek of 2022-02-01: 5 negativeWeek of 2022-03-01: 15 positiveWeek of 2022-03-01: 4 negativeWeek of 2022-04-01: 14 positiveWeek of 2022-04-01: 5 negativeWeek of 2022-05-01: 5 positiveWeek of 2022-05-01: 10 negativeWeek of 2022-06-01: 13 positiveWeek of 2022-06-01: 5 negativeWeek of 2022-07-01: 13 positiveWeek of 2022-07-01: 10 negativeWeek of 2022-08-01: 11 positiveWeek of 2022-08-01: 7 negativeWeek of 2022-09-01: 19 positiveWeek of 2022-09-01: 5 negativeWeek of 2022-10-01: 10 positiveWeek of 2022-10-01: 4 negativeWeek of 2022-11-01: 11 positiveWeek of 2022-11-01: 6 negativeWeek of 2022-12-01: 8 positiveWeek of 2022-12-01: 4 negativeWeek of 2023-01-01: 14 positiveWeek of 2023-01-01: 12 negativeWeek of 2023-02-01: 32 positiveWeek of 2023-02-01: 18 negativeWeek of 2023-03-01: 25 positiveWeek of 2023-03-01: 15 negativeWeek of 2023-04-01: 22 positiveWeek of 2023-04-01: 10 negativeWeek of 2023-05-01: 14 positiveWeek of 2023-05-01: 4 negativeWeek of 2023-06-01: 12 positiveWeek of 2023-06-01: 2 negativeWeek of 2023-07-01: 8 positiveWeek of 2023-07-01: 1 negativeWeek of 2023-08-01: 12 positiveWeek of 2023-08-01: 3 negativeWeek of 2023-09-01: 9 positiveWeek of 2023-09-01: 3 negativeWeek of 2023-10-01: 9 positiveWeek of 2023-10-01: 4 negativeWeek of 2023-11-01: 88 positiveWeek of 2023-11-01: 7 negativeWeek of 2023-12-01: 11 positiveWeek of 2023-12-01: 2 negativeWeek of 2024-01-01: 13 positiveWeek of 2024-01-01: 9 negativeWeek of 2024-02-01: 6 positiveWeek of 2024-02-01: 4 negativeWeek of 2024-03-01: 15 positiveWeek of 2024-03-01: 9 negativeWeek of 2024-04-01: 8 positiveWeek of 2024-04-01: 6 negativeWeek of 2024-05-01: 5 positiveWeek of 2024-05-01: 5 negativeWeek of 2024-06-01: 11 positiveWeek of 2024-06-01: 6 negativeWeek of 2024-07-01: 15 positiveWeek of 2024-07-01: 4 negativeWeek of 2024-08-01: 14 positiveWeek of 2024-08-01: 2 negativeWeek of 2024-09-01: 13 positiveWeek of 2024-09-01: 2 negativeWeek of 2024-10-01: 16 positiveWeek of 2024-10-01: 3 negativeWeek of 2024-11-01: 13 positiveWeek of 2024-11-01: 3 negativeWeek of 2024-12-01: 12 positiveWeek of 2024-12-01: 9 negativeWeek of 2025-01-01: 8 positiveWeek of 2025-01-01: 3 negativeWeek of 2025-02-01: 13 positiveWeek of 2025-02-01: 8 negativeWeek of 2025-03-01: 7 positiveWeek of 2025-03-01: 5 negativeWeek of 2025-04-01: 7 positiveWeek of 2025-04-01: 7 negativeWeek of 2025-05-01: 5 positiveWeek of 2025-05-01: 1 negativeWeek of 2025-06-01: 16 positiveWeek of 2025-06-01: 4 negativeWeek of 2025-07-01: 12 positiveWeek of 2025-07-01: 9 negativeWeek of 2025-08-01: 17 positiveWeek of 2025-08-01: 6 negativeWeek of 2025-09-01: 5 positiveWeek of 2025-09-01: 3 negativeWeek of 2025-10-01: 12 positiveWeek of 2025-10-01: 5 negativeWeek of 2025-11-01: 17 positiveWeek of 2025-11-01: 5 negativeWeek of 2025-12-01: 8 positiveWeek of 2025-12-01: 7 negativeWeek of 2026-01-01: 11 positiveWeek of 2026-01-01: 4 negativeWeek of 2026-02-01: 4 positiveWeek of 2026-02-01: 5 negativeWeek of 2026-03-01: 7 positiveWeek of 2026-03-01: 6 negativeWeek of 2026-04-01: 14 positiveWeek of 2026-04-01: 3 negativeWeek of 2026-05-01: 14 positiveWeek of 2026-05-01: 6 negativeWeek of 2026-06-01: 9 positiveWeek of 2026-06-01: 5 negativeWeek of 2026-07-01: 9 positiveWeek of 2026-07-01: 1 negativeWeek of 2026-08-01: 6 positiveWeek of 2026-08-01: 3 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

2201112026-09-14 23:00 — 153 players2026-09-16 07:00 — 146 players2026-09-17 14:00 — 170 players2026-09-18 22:00 — 173 players2026-09-20 05:00 — 144 players2026-09-21 13:00 — 173 players2026-09-22 21:00 — 184 players2026-09-24 04:00 — 133 players2026-09-25 12:00 — 164 players2026-09-26 19:00 — 215 players2026-09-28 03:00 — 149 players2026-09-29 10:00 — 175 players2026-09-30 18:00 — 214 players2026-10-02 01:00 — 171 players2026-10-03 09:00 — 165 players2026-10-04 17:00 — 193 players2026-10-06 00:00 — 142 players2026-10-07 08:00 — 161 players2026-10-08 15:00 — 195 players2026-10-09 23:00 — 145 players2026-10-11 06:00 — 154 players2026-10-12 14:00 — 192 players2026-10-13 22:00 — 111 players2026-10-14 13:00 — 182 players
Concurrent players, hourly average, last 30 days (census samples).
573164May 2021Aug 2026May 2021 — avg 519 · peak 747Jul 2021 — avg 513 · peak 673Sep 2021 — avg 369 · peak 472Nov 2021 — avg 334 · peak 465Jan 2022 — avg 438 · peak 566Mar 2022 — avg 498 · peak 635May 2022 — avg 444 · peak 614Jul 2022 — avg 379 · peak 481Sep 2022 — avg 285 · peak 360Nov 2022 — avg 302 · peak 404Jan 2023 — avg 297 · peak 369Mar 2023 — avg 474 · peak 612May 2023 — avg 345 · peak 463Jul 2023 — avg 266 · peak 357Sep 2023 — avg 275 · peak 350Nov 2023 — avg 283 · peak 412Jan 2024 — avg 263 · peak 346Mar 2024 — avg 257 · peak 333May 2024 — avg 221 · peak 281Jul 2024 — avg 207 · peak 266Sep 2024 — avg 208 · peak 275Nov 2024 — avg 242 · peak 314Jan 2025 — avg 194 · peak 247Mar 2025 — avg 213 · peak 280May 2025 — avg 197 · peak 253Jul 2025 — avg 196 · peak 255Sep 2025 — avg 202 · peak 272Nov 2025 — avg 252 · peak 326Jan 2026 — avg 213 · peak 284Mar 2026 — avg 203 · peak 266May 2026 — avg 201 · peak 265Jul 2026 — avg 164 · peak 221Aug 2026 — avg 176 · peak 236
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Completion

8
achievements tracked
72%
earned "Crystal 1"
32%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsIn-App PurchasesSteam CloudFamily Sharing1 DLC

2 supported languages: English, Russian

Post-launch support: 1 DLC released, first 2023-01-06 (Steam store data)

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)2,79818%8

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Player tags

2DRPGFunnyIdlerCasualCombatComedyPuzzleClickerStrategy

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

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Similarity via IGDB.