View a comprehensive history of all the new additions in Construct 3 since the first release.

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Windows UWP exporter: now prompts for you to enter the Windows 10 SDK version. Providing the correct value allows the project to open in VS2017.
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Event Sheet View: double-clicking event margins and the space to their left now adds a condition or toggles expanded like it does in C2
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Use a chequered background in the animation preview dialog and respect the background color setting of the image editor
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Fadeout the expressions dictionary when it doesn't have focus and the pointer is not hovering on top of it
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Drag-and-dropping a zipped .capx file to the editor now opens the .capx (as it does with zipped .c3p files)
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Settings option to hide 'Add action' rows in event sheets
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'Remote preview' option to main menu
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Preview toolbar button now available on mobile
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On desktop, the Preview toolbar button now also has a dropdown menu with options to preview the project or remote preview
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Opening the browser save dialog will attempt to request persistent storage permission, and display a warning if it fails.
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Full support for the Newgrounds Gamejam, including notifications about the jam and indicating the end date
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Project bar: sub-items of sound/music files now also have an icon
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If C3 fails to load, the error message now suggests to disable browser addons, since that is often the cause.
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Prompt to enter a custom filename when saving a project with "Download a copy"
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Special handling of importing C2 projects with invalid expressions. Instead of crashing, C3 now reports a list of invalid expressions and closes the project.
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Added the Scirra Arcade exporter
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Added Windows 10 / Xbox One (UWP) exporter
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Add padding when zooming in the Animations Editor. Makes editing the edges of an image slightly more convenient
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Keyboard shortcut to exit tilemap editing using ESCAPE
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Add the corresponding Keyboard shortcut label to the tooltips of the buttons in the Tilemap Bar toolbar
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The Start Page now takes up the whole screen if it is the only thing open.
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NW.js exporter. Note this will only be available when licenses become available (including in the Newgrounds Gamejam).