diff --git a/Directory.Build.props b/Directory.Build.props
index 5a02d1a..e71bc82 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>0.25.2</Version>
+    <Version>0.26.0</Version>
     <TargetFramework>net9.0</TargetFramework>
     <Nullable>enable</Nullable>
     <LangVersion>latest</LangVersion>
diff --git a/src/Avalonia.Desktop/Controls/DownloadsControl.axaml b/src/Avalonia.Desktop/Controls/DownloadsControl.axaml
index 6efbb75..145f594 100644
--- a/src/Avalonia.Desktop/Controls/DownloadsControl.axaml
+++ b/src/Avalonia.Desktop/Controls/DownloadsControl.axaml
@@ -14,7 +14,7 @@
         <helpers:ImagePathToBitmapConverter x:Key="ImagePathToBitmapConverter"/>
     </UserControl.Resources>
 
-    <Grid RowDefinitions="auto,*,auto" ColumnDefinitions="2*,*">
+    <Grid RowDefinitions="auto,*,auto,auto" ColumnDefinitions="2*,*">
 
         <Grid ColumnDefinitions="auto,*,auto"
               Grid.Row="0" Grid.Column="0"
@@ -48,7 +48,7 @@
                   Padding="2"
                   ItemsSource="{Binding DownloadableList}"
                   SelectedItem="{Binding SelectedDownloadable}"
-                  SelectionMode="Single"
+                  SelectionChanged="DataGrid_SelectionChanged"
                   GridLinesVisibility="Horizontal"
                   IsReadOnly="True"
                   CornerRadius="4"
@@ -84,18 +84,23 @@
 
         </md:MarkdownScrollViewer>
 
-        <Grid ColumnDefinitions="auto, *, auto"
-              Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="1"
+        <TextBlock Grid.Row="2" Margin="0,3,0,0" Text="Hold Ctrl or Shift to select multiple files"/>
+
+        <!--Buttons and progress bar-->
+        <Grid ColumnDefinitions="auto,*,auto"
+              Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="1"
               Margin="0,12">
 
-            <Button Command="{Binding DownloadAddonCommand}"
+            <Button Name="DownloadButton"
+                    Command="{Binding DownloadAddonCommand}"
                     Grid.Column="0"
                     Margin="0,5,5,5"
                     Padding="5"
                     Content="{Binding DownloadButtonText, FallbackValue= Download}"
                     IsVisible="{Binding !IsInProgress}"/>
 
-            <Button Command="{Binding CancelDownloadCommand}"
+            <Button Name="CancelButton"
+                    Command="{Binding CancelDownloadCommand}"
                     Grid.Column="0"
                     Margin="0,5,5,5"
                     Padding="5"
@@ -103,10 +108,15 @@
                     IsVisible="{Binding IsInProgress}"/>
 
             <ProgressBar Value="{Binding ProgressBarValue}"
-                         Height="10"
+                         Height="{Binding #DownloadButton.Bounds.Height}"
                          HorizontalAlignment="Stretch"
                          Grid.Column="1"/>
 
+            <TextBlock Grid.Column="1"
+                       HorizontalAlignment="Center"
+                       VerticalAlignment="Center"
+                       Text="{Binding ProgressMessage}"/>
+
             <Button Grid.Column="2"
                     IsVisible="{Binding !IsInProgress}"
                     HorizontalAlignment="Right"
diff --git a/src/Avalonia.Desktop/Controls/DownloadsControl.axaml.cs b/src/Avalonia.Desktop/Controls/DownloadsControl.axaml.cs
index dec318c..8aeae3c 100644
--- a/src/Avalonia.Desktop/Controls/DownloadsControl.axaml.cs
+++ b/src/Avalonia.Desktop/Controls/DownloadsControl.axaml.cs
@@ -1,5 +1,6 @@
 using Avalonia.Controls;
 using Avalonia.Desktop.ViewModels;
+using Common.Entities;
 using Common.Helpers;
 using CommunityToolkit.Mvvm.Input;
 
@@ -40,4 +41,18 @@ private void AddContextMenuButtons(DataGrid dataGrid)
 
         _ = dataGrid.ContextMenu.Items.Add(downloadButton);
     }
+
+    private void DataGrid_SelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        var viewModel = DataContext as DownloadsViewModel;
+
+        List<DownloadableAddonEntity> list = [];
+
+        foreach (var a in DownloadableList.SelectedItems)
+        {
+            list.Add((DownloadableAddonEntity)a);
+        }
+
+        viewModel!.SelectedDownloadableList = list;
+    }
 }
diff --git a/src/Avalonia.Desktop/ViewModels/DownloadsViewModel.cs b/src/Avalonia.Desktop/ViewModels/DownloadsViewModel.cs
index 057dd85..2d922bb 100644
--- a/src/Avalonia.Desktop/ViewModels/DownloadsViewModel.cs
+++ b/src/Avalonia.Desktop/ViewModels/DownloadsViewModel.cs
@@ -97,6 +97,16 @@ public ImmutableList<IDownloadableAddon> DownloadableList
     [NotifyCanExecuteChangedFor(nameof(DownloadAddonCommand))]
     private DownloadableAddonEntity? _selectedDownloadable;
 
+    /// <summary>
+    /// Currently selected downloadable campaign, map or mod
+    /// </summary>
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(DownloadButtonText))]
+    private List<DownloadableAddonEntity>? _selectedDownloadableList;
+
+    [ObservableProperty]
+    private string _progressMessage = string.Empty;
+
     /// <summary>
     /// Description of the selected addon
     /// </summary>
@@ -109,18 +119,18 @@ public string DownloadButtonText
     {
         get
         {
-            if (SelectedDownloadable is null)
+            if (SelectedDownloadableList is null or [])
             {
                 return "Download";
             }
             else
             {
-                return $"Download ({SelectedDownloadable.FileSize.ToSizeString()})";
+                return $"Download ({SelectedDownloadableList.Sum(x => x.FileSize).ToSizeString()})";
             }
         }
     }
 
-    public List<FilterItemEnum> FilterItems => Enum.GetValues(typeof(FilterItemEnum)).Cast<FilterItemEnum>().ToList();
+    public List<FilterItemEnum> FilterItems => [.. Enum.GetValues<FilterItemEnum>()];
 
     [ObservableProperty]
     [NotifyPropertyChangedFor(nameof(DownloadableList))]
@@ -206,21 +216,38 @@ private async Task DownloadAddon()
     {
         try
         {
+            if (SelectedDownloadableList is null or [])
+            {
+                return;
+            }
+
+            List<DownloadableAddonEntity> filesToDownload = [.. SelectedDownloadableList];
+
             IsInProgress = true;
 
             _cancellationTokenSource = new();
 
-            if (SelectedDownloadable is null)
+            _downloadableAddonsProvider.Progress.ProgressChanged += OnProgressChanged;
+
+            byte downloadCount = 1;
+
+            foreach (var item in filesToDownload)
             {
-                return;
-            }
+                if (_cancellationTokenSource.IsCancellationRequested)
+                {
+                    ThrowHelper.ThrowOperationCanceledException();
+                }
 
-            _downloadableAddonsProvider.Progress.ProgressChanged += OnProgressChanged;
+                ProgressMessage = $"Downloading {item.Title}. File {downloadCount} of {filesToDownload.Count}.";
 
-            await _downloadableAddonsProvider.DownloadAddonAsync(SelectedDownloadable, _cancellationTokenSource.Token).ConfigureAwait(true);
+                await _downloadableAddonsProvider.DownloadAddonAsync(item, _cancellationTokenSource.Token).ConfigureAwait(true);
 
-            _downloadableAddonsProvider.Progress.ProgressChanged -= OnProgressChanged;
-            OnProgressChanged(null, 0);
+                downloadCount++;
+            }
+        }
+        catch (OperationCanceledException)
+        {
+            //nothing to do
         }
         catch (Exception ex)
         {
@@ -236,7 +263,10 @@ private async Task DownloadAddon()
         }
         finally
         {
+            _downloadableAddonsProvider.Progress.ProgressChanged -= OnProgressChanged;
+            OnProgressChanged(null, 0);
             IsInProgress = false;
+            ProgressMessage = string.Empty;
         }
     }
     private bool DownloadSelectedAddonCanExecute => SelectedDownloadable is not null;
diff --git a/src/Common.Common/Helpers/Extensions.cs b/src/Common.Common/Helpers/Extensions.cs
index ba73352..87a6af0 100644
--- a/src/Common.Common/Helpers/Extensions.cs
+++ b/src/Common.Common/Helpers/Extensions.cs
@@ -10,20 +10,20 @@ public static class Extensions
     /// <param name="size">File size</param>
     public static string ToSizeString(this long size)
     {
-        if (size < 1024)
+        if (size < 1000)
         {
-            return $"{size} B";
+            return size.ToString("0") + "B";
         }
-        else if (size < 1024 * 1024)
+        else if (size < 1000 * 1000)
         {
-            return $"{size / 1024} KB";
+            return (size / 1000).ToString("0") + "KB";
         }
-        else if (size < 1024 * 1024 * 1024)
+        else if (size < 1000 * 1000 * 1000)
         {
-            return $"{size / 1024 / 1024} MB";
+            return (size * 1e-6).ToString("0") + "MB";
         }
 
-        return $"{size / 1024 / 1024 / 1024} GB";
+        return (size * 1e-9).ToString("0.##") + "GB";
     }
 
     /// <summary>