The Game Census
Main Assembly cover art

Main Assembly

Bad Yolk Games · Team17 · 2021-01-26

Steam

Simulation

Modes: Single player, Multiplayer, Co-operative

Releases: Jun 11, 2020 (PC (Microsoft Windows))

You’re the designer, engineer and architect if you can imagine it you can create it! Construct robots of any shape or size from eight-legged spider bots to eerie UFO contraptions.

Main Assembly is a Simulation game released in 2021, priced at $19.99, with an estimated 50,000 .. 100,000 owners and a Very Positive review sentiment (83% of 1353 reviews).

3
playing now
83%
positive of 1.4k reviews
Very Positive
steam's rating (official)
50,000–100,000
owners (SteamSpy est.)
85/100
critic score (1 outlets, IGDB)
platinum
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$19.99
steam price (US)

3 players in-game as of 2026-10-14 17:00 UTC (census sample)

Health check

Quietly active
  • · 3 players in-game at the last census sample.
  • · 35 reviews in the last 8 weeks (~4/week).
  • · Review velocity up 17% vs the prior 8 weeks.
  • · Top 12% of 16,638 Simulation games in the census by review count.

Health tier since 2026-08-31

Estimated sales: 27k–61k copies

Review-multiple estimate from 1,353 total reviews — how this is computed.

All-time low: $1.99 at Steam (2025-12-04) · bundled 8×via IsThereAnyDeal

12-month high $19.99 · on sale 98 of 137 observed days (census price snapshots)

Review momentum

PositiveNegative
909020202026Week of 2020-06-01: 69 positiveWeek of 2020-06-01: 4 negativeWeek of 2020-07-01: 27 positiveWeek of 2020-07-01: 1 negativeWeek of 2020-08-01: 25 positiveWeek of 2020-08-01: 3 negativeWeek of 2020-09-01: 7 positiveWeek of 2020-09-01: 1 negativeWeek of 2020-10-01: 6 positiveWeek of 2020-11-01: 41 positiveWeek of 2020-11-01: 4 negativeWeek of 2020-12-01: 36 positiveWeek of 2020-12-01: 1 negativeWeek of 2021-01-01: 90 positiveWeek of 2021-01-01: 4 negativeWeek of 2021-02-01: 64 positiveWeek of 2021-02-01: 7 negativeWeek of 2021-03-01: 25 positiveWeek of 2021-03-01: 3 negativeWeek of 2021-04-01: 31 positiveWeek of 2021-04-01: 7 negativeWeek of 2021-05-01: 33 positiveWeek of 2021-05-01: 7 negativeWeek of 2021-06-01: 12 positiveWeek of 2021-06-01: 3 negativeWeek of 2021-07-01: 19 positiveWeek of 2021-07-01: 1 negativeWeek of 2021-08-01: 33 positiveWeek of 2021-08-01: 5 negativeWeek of 2021-09-01: 13 positiveWeek of 2021-09-01: 2 negativeWeek of 2021-10-01: 11 positiveWeek of 2021-11-01: 29 positiveWeek of 2021-11-01: 2 negativeWeek of 2021-12-01: 25 positiveWeek of 2021-12-01: 1 negativeWeek of 2022-01-01: 29 positiveWeek of 2022-01-01: 3 negativeWeek of 2022-02-01: 8 positiveWeek of 2022-03-01: 18 positiveWeek of 2022-03-01: 4 negativeWeek of 2022-04-01: 12 positiveWeek of 2022-04-01: 1 negativeWeek of 2022-05-01: 12 positiveWeek of 2022-05-01: 2 negativeWeek of 2022-06-01: 10 positiveWeek of 2022-06-01: 3 negativeWeek of 2022-07-01: 9 positiveWeek of 2022-07-01: 2 negativeWeek of 2022-08-01: 4 positiveWeek of 2022-08-01: 1 negativeWeek of 2022-09-01: 4 positiveWeek of 2022-09-01: 2 negativeWeek of 2022-10-01: 5 positiveWeek of 2022-10-01: 4 negativeWeek of 2022-11-01: 6 positiveWeek of 2022-11-01: 2 negativeWeek of 2022-12-01: 14 positiveWeek of 2022-12-01: 2 negativeWeek of 2023-01-01: 6 positiveWeek of 2023-01-01: 2 negativeWeek of 2023-02-01: 5 positiveWeek of 2023-02-01: 2 negativeWeek of 2023-03-01: 11 positiveWeek of 2023-03-01: 2 negativeWeek of 2023-04-01: 4 positiveWeek of 2023-04-01: 3 negativeWeek of 2023-05-01: 7 positiveWeek of 2023-05-01: 1 negativeWeek of 2023-06-01: 7 positiveWeek of 2023-06-01: 1 negativeWeek of 2023-07-01: 9 positiveWeek of 2023-07-01: 2 negativeWeek of 2023-08-01: 7 positiveWeek of 2023-08-01: 4 negativeWeek of 2023-09-01: 6 positiveWeek of 2023-09-01: 2 negativeWeek of 2023-10-01: 6 positiveWeek of 2023-11-01: 9 positiveWeek of 2023-11-01: 1 negativeWeek of 2023-12-01: 5 positiveWeek of 2023-12-01: 2 negativeWeek of 2024-01-01: 14 positiveWeek of 2024-01-01: 5 negativeWeek of 2024-02-01: 4 positiveWeek of 2024-02-01: 2 negativeWeek of 2024-03-01: 8 positiveWeek of 2024-03-01: 2 negativeWeek of 2024-04-01: 5 positiveWeek of 2024-04-01: 1 negativeWeek of 2024-05-01: 5 positiveWeek of 2024-05-01: 1 negativeWeek of 2024-06-01: 7 positiveWeek of 2024-06-01: 3 negativeWeek of 2024-07-01: 3 positiveWeek of 2024-07-01: 1 negativeWeek of 2024-08-01: 1 positiveWeek of 2024-08-01: 1 negativeWeek of 2024-09-01: 8 positiveWeek of 2024-10-01: 2 positiveWeek of 2024-11-01: 3 positiveWeek of 2024-11-01: 2 negativeWeek of 2024-12-01: 6 positiveWeek of 2024-12-01: 2 negativeWeek of 2025-01-01: 11 positiveWeek of 2025-01-01: 3 negativeWeek of 2025-02-01: 1 negativeWeek of 2025-03-01: 3 positiveWeek of 2025-03-01: 3 negativeWeek of 2025-04-01: 2 positiveWeek of 2025-04-01: 2 negativeWeek of 2025-05-01: 1 negativeWeek of 2025-06-01: 1 positiveWeek of 2025-06-01: 1 negativeWeek of 2025-07-01: 2 positiveWeek of 2025-07-01: 2 negativeWeek of 2025-08-01: 7 positiveWeek of 2025-08-01: 1 negativeWeek of 2025-09-01: 2 positiveWeek of 2025-09-01: 3 negativeWeek of 2025-10-01: 2 positiveWeek of 2025-10-01: 3 negativeWeek of 2025-11-01: 1 negativeWeek of 2025-12-01: 4 positiveWeek of 2025-12-01: 3 negativeWeek of 2026-01-01: 3 positiveWeek of 2026-01-01: 2 negativeWeek of 2026-02-01: 1 negativeWeek of 2026-03-01: 3 positiveWeek of 2026-03-01: 1 negativeWeek of 2026-04-01: 3 positiveWeek of 2026-05-01: 4 positiveWeek of 2026-06-01: 3 positiveWeek of 2026-06-01: 3 negativeWeek of 2026-07-01: 4 positiveWeek of 2026-07-01: 1 negativeWeek of 2026-08-01: 1 positiveWeek of 2026-08-01: 1 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

602026-09-15 02:00 — 0 players2026-09-16 11:00 — 1 players2026-09-17 18:00 — 3 players2026-09-19 02:00 — 2 players2026-09-20 09:00 — 1 players2026-09-21 17:00 — 1 players2026-09-23 00:00 — 0 players2026-09-24 08:00 — 2 players2026-09-25 15:00 — 1 players2026-09-26 23:00 — 2 players2026-09-28 06:00 — 0 players2026-09-29 14:00 — 2 players2026-09-30 21:00 — 4 players2026-10-02 05:00 — 4 players2026-10-03 12:00 — 2 players2026-10-04 21:00 — 3 players2026-10-06 04:00 — 0 players2026-10-07 12:00 — 4 players2026-10-08 19:00 — 5 players2026-10-10 03:00 — 2 players2026-10-11 10:00 — 2 players2026-10-12 18:00 — 6 players2026-10-14 01:00 — 1 players2026-10-14 17:00 — 3 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$19.99$2.162020-06-112026-08-252020-06-11 — best price $16.182020-07-15 — best price $12.742020-08-22 — best price $19.992020-10-25 — best price $19.992020-12-15 — best price $18.992021-02-04 — best price $16.392021-03-28 — best price $19.992021-05-08 — best price $19.992021-06-19 — best price $19.992021-08-20 — best price $9.992021-10-09 — best price $19.992021-12-04 — best price $16.972022-01-22 — best price $19.992022-03-21 — best price $7.992022-05-24 — best price $19.992022-08-01 — best price $19.992022-10-15 — best price $16.392022-12-19 — best price $7.042023-03-27 — best price $4.592023-05-31 — best price $16.992023-08-28 — best price $16.592023-12-01 — best price $16.392024-02-20 — best price $3.992024-04-23 — best price $19.262024-07-24 — best price $15.992024-09-16 — best price $3.392024-11-21 — best price $3.162025-01-16 — best price $16.392025-03-29 — best price $3.022025-06-08 — best price $4.002025-08-20 — best price $3.292025-10-06 — best price $3.902025-12-11 — best price $3.492026-02-23 — best price $2.962026-04-10 — best price $2.922026-05-25 — best price $4.002026-07-23 — best price $3.252026-08-25 — best price $3.90
Lowest recorded price across tracked stores, per day (census snapshots).

Completion

21
achievements tracked
78.7%
earned "Programming level 3"
8.9%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerMulti-playerPvPOnline PvPCo-opOnline Co-opSteam AchievementsSteam WorkshopPartial Controller SupportSteam Cloud

9 supported languages: English, French, Italian, German, Spanish - Spain, Russian, Simplified Chinese, Traditional Chinese, Portuguese - Brazil

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)2,8681%21

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

Player tags

3DCo-opLogicRobotsPhysicsSandboxScienceBuildingCraftingManagement

Census log

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

Players also track

Star Control®: OriginsDon't Knock TwiceSurvivalistTanziaWeapon Shop FantasyDude SimulatorTech Support: Error UnknownApsulov: End of Gods

Similarity via IGDB.

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