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.

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

1 players in-game as of 2026-08-30 07:00 UTC (census sample)

Health check

Insufficient data
  • · Not enough review history collected yet to judge health.
  • · Top 28% of 6,674 Simulation games in the census by review count.
Estimated sales: 27k–61k copies

Review-multiple estimate from 1,351 total reviews — how this is computed.

Current store prices

lowest across shops (ITAD)$3.90-80%

Deal snapshots via CheapShark, refreshed daily.

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

12-month high $19.99 · on sale 115 of 160 observed days (census price snapshots)

Players online

702026-08-11 22:00 — 0 players2026-08-12 13:00 — 4 players2026-08-13 05:00 — 3 players2026-08-13 21:00 — 1 players2026-08-14 13:00 — 3 players2026-08-15 05:00 — 2 players2026-08-15 21:00 — 4 players2026-08-16 13:00 — 2 players2026-08-17 05:00 — 2 players2026-08-17 20:00 — 7 players2026-08-18 12:00 — 5 players2026-08-19 04:00 — 0 players2026-08-19 20:00 — 6 players2026-08-20 11:00 — 4 players2026-08-21 03:00 — 4 players2026-08-21 19:00 — 2 players2026-08-22 11:00 — 2 players2026-08-23 02:00 — 3 players2026-08-23 18:00 — 6 players2026-08-24 10:00 — 1 players2026-08-25 02:00 — 1 players2026-08-25 18:00 — 2 players2026-08-26 10:00 — 1 players2026-08-27 02:00 — 1 players2026-08-28 08:00 — 3 players2026-08-29 00:00 — 5 players2026-08-29 15:00 — 5 players2026-08-30 07:00 — 1 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 TwiceSurvivalistWeapon Shop FantasyDude SimulatorTech Support: Error UnknownApsulov: End of GodsTorchlight III

Similarity via IGDB.

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