Main Assembly

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App ID	1078920
App Type	Game
Developer	Bad Yolk Games
Publisher	Team17
Supported Systems	Windows
Technologies	Unreal Engine
Last Changenumber	28983991
Last Record Update	14 May 2025 – 15:23:44 UTC ()
Release Date	26 January 2021 – 16:00:00 UTC ()

😎 80.71%

1k reviews

In-Game

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.

Additional Information

Developer

Bad Yolk Games

metacritic_name

Main Assembly

controller_support

partial

community_visible_stats

Yes

workshop_visible

Yes

ReleaseState

released

Publisher

Team17

eulas

0 ↴
id	1078920_eula_0
name	Main Assembly EULA
url	https://store.steampowered.com//eula/1078920_eula_0
version	1

Store Release Date

26 January 2021 – 16:01:15 UTC ()

osarch

community_hub_visible

Yes

Social Media

https://discord.gg/mainassembly
https://www.facebook.com/BadYolkGames/
https://www.twitch.tv/badyolkgames
https://x.com/BadYolkGames
https://www.youtube.com/channel/UChbuHV7NUa4P69fiy5zDOhw/

Primary Genre

Simulation (28)

Store Genres

Simulation (28)

Steam Release Date

26 January 2021 – 16:00:00 UTC ()

Store Asset Modification Time

10 November 2022 – 09:04:06 UTC () (1668071046)

library_assets

library_capsule	en
library_hero	en
library_logo	en
logo_position ↴
pinned_position	CenterCenter
width_pct	66.82206724376545
height_pct	100

osextended

empty string

review_score

review_percentage

Detected Technologies (?)

Unreal Engine, CEF SDK, NVIDIA_APEX SDK, NVIDIA_Nsight_Aftermath SDK, NVIDIA_PhysX SDK, NvCloth SDK, Ogg SDK, Vorbis SDK

Steam Deck Compatibility

Steam Deck:
Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
Entering some text requires manually invoking the on-screen keyboard
In-game interface text is legible on Steam Deck
This game's default graphics configuration performs well on Steam Deck
Note: This game does not default to external Bluetooth/USB controllers on Deck, and may require manually switching the active controller via the Quick Access Menu
SteamOS:
This game runs successfully on SteamOS
Note: Entering some text requires manually invoking the on-screen keyboard
Note: Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
Note: This game does not default to external Bluetooth/USB controllers on SteamOS, and may require manually switching the active controller via the Quick Access Menu
category: Playable
steamos_compatibility: Compatible
test_timestamp: 5 March 2022 – 00:00:00 UTC
tested_build_id: 6123531

configuration:

supported_input	gamepad
requires_manual_keyboard_invoke	1
requires_non_controller_launcher_nav	0
primary_player_is_controller_slot_0	1
non_deck_display_glyphs	1
small_text	0
requires_internet_for_setup	0
requires_internet_for_singleplayer	0
recommended_runtime	proton-experimental
requires_h264	0
requires_voice_files	0
gamescope_frame_limiter_not_supported	0
hdr_support	0

Early Access Release Date

11 June 2020 – 00:00:00 UTC ()

First seen on SteamDB

30 April 2019 – 12:27:56 UTC (), in changelist #6175879

Supported Languages

10 Languages	Interface	Full Audio	Subtitles	Achievements
English	Yes	Yes	Yes	Yes
French	Yes		Yes	Yes
Italian	Yes		Yes	Yes
German	Yes		Yes	Yes
Spanish - Spain	Yes		Yes	Yes
Russian	Yes		Yes	Yes
Simplified Chinese	Yes		Yes	Yes
Traditional Chinese	Yes		Yes	Yes
Portuguese - Brazil	Yes		Yes	Yes
Japanese	Yes		Yes	Yes

Hardware Categories

Partial Controller Support

Assets

Load all asset images

clienticon

c6dac08bbaf164918a980933f4029c90ddd676b5

clienttga

5ba9ec1e31222a541c77a09ad74999a7c75caa41

icon

372ee3533572c5b29a5fffd0f096b3cdc9c8e8f9

logo

73710968d1adda2b6fcee1cb9e319f617891a5e1

logo_small

73710968d1adda2b6fcee1cb9e319f617891a5e1_thumb

small_capsule

english

capsule_231x87.jpg

header_image

english

header.jpg

library_assets_full

library_capsule ↴
image/english	library_600x900.jpg
image2x/english	library_600x900_2x.jpg
library_hero ↴
image/english	library_hero.jpg
image2x/english	library_hero_2x.jpg
library_logo ↴
logo_position/pinned_position	CenterCenter
logo_position/width_pct	66.82206724376545
logo_position/height_pct	100
image/english	logo.png

Assets

main_capsule	capsule_616x353.jpg
small_capsule	capsule_231x87.jpg
header	header.jpg
page_background	page_bg_generated_v6b.jpg
hero_capsule	hero_capsule.jpg
library_capsule	library_600x900.jpg
library_capsule_2x	library_600x900_2x.jpg
library_hero	library_hero.jpg
library_hero_2x	library_hero_2x.jpg
community_icon	372ee3533572c5b29a5fffd0f096b3cdc9c8e8f9.jpg
page_background_path	app/1078920
raw_page_background	page_bg_raw.jpg
timestamp	15 October 2024 – 14:38:28 UTC

Trailers

256819722 ↴
trailer_name	Release Out of Early Access
trailer_category	0
trailer_480p/video/webm	256819722/movie480_vp9.webm
trailer_480p/video/mp4	256819722/movie480.mp4
trailer_max/video/webm	256819722/movie_max_vp9.webm
trailer_max/video/mp4	256819722/movie_max.mp4
microtrailer/video/webm	1078920/343310/da2e717a7db9da6cd4d10251b0232bfd0ec1b8ed/1750613137/microtrailer.webm
microtrailer/video/mp4	1078920/343310/da2e717a7db9da6cd4d10251b0232bfd0ec1b8ed/1750613137/microtrailer.mp4
screenshot_medium	256819722/movie.293x165.jpg
screenshot_full	256819722/movie_full.jpg
trailer_base_id	343310
all_ages	true
is_highlight	true
timestamp	1628160512
256817430 ↴
trailer_name	Release Date Announcement
trailer_category	0
trailer_480p/video/webm	256817430/movie480_vp9.webm
trailer_480p/video/mp4	256817430/movie480.mp4
trailer_max/video/webm	256817430/movie_max_vp9.webm
trailer_max/video/mp4	256817430/movie_max.mp4
microtrailer/video/webm	1078920/339053/daf19dca0451c3437c4da559b3c5e414f739ac73/1750613131/microtrailer.webm
microtrailer/video/mp4	1078920/339053/daf19dca0451c3437c4da559b3c5e414f739ac73/1750613131/microtrailer.mp4
screenshot_medium	256817430/movie.293x165.jpg
screenshot_full	256817430/movie_full.jpg
trailer_base_id	339053
all_ages	true
is_highlight	true
timestamp	1610039868
256808807 ↴
trailer_name	Bot Brawl Update Trailer
trailer_category	0
trailer_480p/video/webm	256808807/movie480_vp9.webm
trailer_480p/video/mp4	256808807/movie480.mp4
trailer_max/video/webm	256808807/movie_max_vp9.webm
trailer_max/video/mp4	256808807/movie_max.mp4
microtrailer/video/webm	1078920/325402/04ad2cd2c8477bb2d6fe4fae8453ebc474d6f5e5/1750613127/microtrailer.webm
microtrailer/video/mp4	1078920/325402/04ad2cd2c8477bb2d6fe4fae8453ebc474d6f5e5/1750613127/microtrailer.mp4
screenshot_medium	256808807/movie.293x165.jpg
screenshot_full	256808807/movie_full.jpg
trailer_base_id	325402
all_ages	true
is_highlight	true
timestamp	1605093667
256800068 ↴
trailer_name	1k Workshop Creations
trailer_category	0
trailer_480p/video/webm	256800068/movie480_vp9.webm
trailer_480p/video/mp4	256800068/movie480.mp4
trailer_max/video/webm	256800068/movie_max_vp9.webm
trailer_max/video/mp4	256800068/movie_max.mp4
microtrailer/video/webm	1078920/310541/ee62fae87f029891a8bb4aaf1fe6c63366a446c0/1750613126/microtrailer.webm
microtrailer/video/mp4	1078920/310541/ee62fae87f029891a8bb4aaf1fe6c63366a446c0/1750613126/microtrailer.mp4
screenshot_medium	256800068/movie.293x165.jpg
screenshot_full	256800068/movie_full.jpg
trailer_base_id	310541
all_ages	true
is_highlight	true
timestamp	1610039884
256789387 ↴
trailer_name	FGS Trailer
trailer_category	0
trailer_480p/video/webm	256789387/movie480_vp9.webm
trailer_480p/video/mp4	256789387/movie480.mp4
trailer_max/video/webm	256789387/movie_max_vp9.webm
trailer_max/video/mp4	256789387/movie_max.mp4
microtrailer/video/webm	1078920/292602/b9829405cf290fa4dd20ff94c4f878f33ef21a88/1750613112/microtrailer.webm
microtrailer/video/mp4	1078920/292602/b9829405cf290fa4dd20ff94c4f878f33ef21a88/1750613112/microtrailer.mp4
screenshot_medium	256789387/movie.293x165.jpg
screenshot_full	256789387/movie_full.jpg
trailer_base_id	292602
all_ages	true
timestamp	1604938311

Depots

ID	Configuration	Size	DL.
228988	Windows Shared InstallDepot from 228980VC 2019 Redist	No size
228990	Windows Shared InstallDepot from 228980DirectX Jun 2010 Redist	No size
1078921	Windows Main Assembly Content	3.13 GiB	1.17 GiB

Total size on disk is 3.13 GiB and total download size is 1.17 GiB.

Branches

Name	Description	Build ID	Time Updated
public		6123531	26 January 2021 – 15:59:08 UTC
experimental	Experimental branch with untested (but great!) changes. Use at your own risk!	7045205	19 July 2021 – 09:06:25 UTC

Other

Name	Value
workshopdepot	Main Assembly (1078920)
baselanguages	English, German, French, Italian, Spanish - Spain, Simplified Chinese, Traditional Chinese, Japanese, Portuguese - Brazil
privatebranches	1

Main Assembly

Additional Information

Supported Languages

Tags

Categories

Hardware Categories

Assets

Depots

Branches

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