The new update 2017.05.15 for the Linux-version of AppGameKit (aka AGK2) adds new file and folder commands and also commands for vibration on Android und iOS devices.
Besides that, it fixes a lot of bugs.

The changelog for this version:

New file and folder commands added to AppGameKit!

This new version of AppGameKit brings many new features and a number of maintenance improvements and fixes. For some time the game development community have been asking for improved file and folder controls. Today we're able to satisfy that need with a host of new commands. We've also added a command so you can control vibration feedback on mobile devices.

There's a host of fixes and maintenance improvements. You can read the full change list here;

Strings
Added ByteLen command to return the size of a string in bytes

Haptics
Added VibrateDevice command to enable vibration on Android and iOS

In-App Purchases
Fixed InAppPurchaseRestore causing a crash on iOS

Android
Fixed Android images loaded with LoadImageResized sometimes not being loaded
Fixed Android SetDeviceCameraToImage somtimes cropping the image incorrectly
Fixed Android PlayVideoToImage somtimes cropping the image incorrectly

File Commands
Added SimplifyPath, JoinPaths, and IsAbsolutePath commands to manage file paths
Added CountWindowsDrives and GetWindowsDrive to get the drives available on Windows devices
ChooseRawFile now has an extra parameter to return the full path instead of copying the file to the write folder
Added OpenRawFolder, GetRawFolderNumFiles, GetRawFolderNumFolders, GetRawFolderFileName, and GetRawFolderFolderName to get the contents of any folder anywhere on the filesystem on all platforms
Any command that takes a file path can now use an absolute path with the prefix "raw:" to allow access to files anywhere on the filesystem on all platforms, e.g. "raw:C:\MyFolder\MyFile.txt"
SetRawWritePath is now deprecated in favour of the above raw folder commands and raw file paths
GetFirstFile, GetFirstFolder, GetFileCount, and GetFolderCount now have an extra parameter to return only files from the read folder, or write folder, or both (default)

Exporting
Updated iOS export icons and launch images for the latest devices
Fixed iOS export with version number set to 1.0 not setting the version number correctly

Tier2
Updated iOS Tier 2 template projects for new icons and launch images
Updated iOS Tier 2 projects to XCode 8 and iOS 10.3
Updated Mac Tier 2 projects to XCode 8 and MacOS 10.12 (Sierra)

Multiplayer
Added a parameter to HostNetwork to set the port for IPv6 connections separately from the IPv4 port
HostNetwork will no longer use IPv6 unless an IPv6 port is specified

Misc
Fixed SetVirtualResolution not working properly whilst rendering to an image
Fixed returning a float from a plugin crashing on Linux and Mac machines that don't have AVX instructions
Fixed SetSoundInstanceBalance doing nothing on Linux and Mac
Fixed SetWindowAllowResize not working on Linux
Fixed SetWindowSize on Linux repositioning the window to 0,0
Switching between windowed and fullscreen mode on Windows now remembers window position
Fixed middle mouse button not working on Linux
Removed requirement that Memblock integers and floats be aligned to 4 byte offsets, although unaligned access will be slower than aligned values
Broadcasting will now only copy the plugins that are imported by the app, rather than all available plugins

AGK2 is a multi-plattform 2D/3D game-engine and development environment (IDE) for Linux, MacOS and Windows.
Programs and games can be developed in a BASIC-like dialect or in C++ and the developed programs can be run on/exported for Linux, Windows, MacOS, Android, iOS and HTML5.

More information on AGK2:

Homepage of AGK2
AGK2 on Steam
Tutorial Playlist on YouTube