diff --git a/Млаумчерб.Клиент/LauncherLogger.cs b/Млаумчерб.Клиент/LauncherLogger.cs
index cd7d219..a76eb34 100644
--- a/Млаумчерб.Клиент/LauncherLogger.cs
+++ b/Млаумчерб.Клиент/LauncherLogger.cs
@@ -1,7 +1,4 @@
-using DTLib.Filesystem;
-using DTLib.Logging;
-
-namespace Млаумчерб.Клиент;
+namespace Млаумчерб.Клиент;
 
 public class LauncherLogger : FileLogger
 {
diff --git a/Млаумчерб.Клиент/Главне.cs b/Млаумчерб.Клиент/Главне.cs
index 26adaf6..a46a181 100644
--- a/Млаумчерб.Клиент/Главне.cs
+++ b/Млаумчерб.Клиент/Главне.cs
@@ -6,6 +6,7 @@ global using DTLib.Logging;
 global using DTLib.Filesystem;
 global using File = DTLib.Filesystem.File;
 global using Directory = DTLib.Filesystem.Directory;
+global using Path = DTLib.Filesystem.Path;
 using System.Globalization;
 using Avalonia;
 
diff --git a/Млаумчерб.Клиент/Игра.cs b/Млаумчерб.Клиент/Игра.cs
index 31c2145..b21d01a 100644
--- a/Млаумчерб.Клиент/Игра.cs
+++ b/Млаумчерб.Клиент/Игра.cs
@@ -1,6 +1,8 @@
-using System.Threading.Tasks;
-using DTLib.Filesystem;
-using Path = DTLib.Filesystem.Path;
+using System.Threading;
+using System.Threading.Tasks;
+using CliWrap;
+using DTLib.Extensions;
+using Млаумчерб.Клиент.классы;
 
 namespace Млаумчерб.Клиент;
 
@@ -11,6 +13,7 @@ public interface IGame
     Progress<NetworkTransferResult> BeginUpdate();
     void EndUpdate();
     Task Launch();
+    void Close();
 }
 
 public class MinecraftVersion : IGame
@@ -18,6 +21,13 @@ public class MinecraftVersion : IGame
     public string Name { get; }
     public IOPath InstallationDirectory { get; }
 
+    private IOPath JavawFilePath;
+
+    private JavaArguments javaArgs;
+    private GameArguments gameArgs;
+    private CancellationTokenSource? cts;
+    private CommandTask<CommandResult> commandTask;
+    
     public MinecraftVersion(string name)
     {
         Name = name;
@@ -34,8 +44,28 @@ public class MinecraftVersion : IGame
         throw new NotImplementedException();
     }
 
-    public Task Launch()
+    public async Task Launch()
     {
-        throw new NotImplementedException();
+        var javaArgsList = javaArgs.FillPlaceholders([]);
+        var gameArgsList = gameArgs.FillPlaceholders([]);
+        var command = Cli.Wrap(JavawFilePath.ToString())
+            .WithWorkingDirectory(InstallationDirectory.ToString())
+            .WithArguments(javaArgsList)
+            .WithArguments(gameArgsList);
+        Приложение.Логгер.LogInfo(nameof(MinecraftVersion),
+            $"launching the game" +
+            "\njava: " + command.TargetFilePath +
+            "\nworking_dir: " + command.WorkingDirPath +
+            "\njava_arguments: \n\t" + javaArgsList.MergeToString("\n\t") +
+            "\ngame_arguments: \n\t" + gameArgsList.MergeToString("\n\t"));
+        cts = new();
+        commandTask = command.ExecuteAsync(cts.Token);
+        var result = await commandTask;
+        Приложение.Логгер.LogInfo(nameof(MinecraftVersion), $"game exited with code {result.ExitCode}");
+    }
+
+    public void Close()
+    {
+        cts?.Cancel();
     }
 }
\ No newline at end of file
diff --git a/Млаумчерб.Клиент/Млаумчерб.Клиент.csproj b/Млаумчерб.Клиент/Млаумчерб.Клиент.csproj
index 6f12b6f..d91b81b 100644
--- a/Млаумчерб.Клиент/Млаумчерб.Клиент.csproj
+++ b/Млаумчерб.Клиент/Млаумчерб.Клиент.csproj
@@ -18,6 +18,7 @@
         <PackageReference Include="Avalonia.Themes.Simple" Version="11.*" />
         <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.*" />
         <PackageReference Include="AvaloniaGif-Unofficial" Version="1.0.0" />
+        <PackageReference Include="CliWrap" Version="3.6.6" />
         <PackageReference Include="DTLib" Version="1.3.*" />
         <PackageReference Include="DTLib.Ben.Demystifier" Version="1.0.*" />
         <PackageReference Include="DTLib.Logging" Version="1.3.*" />
diff --git a/Млаумчерб.Клиент/Настройки.cs b/Млаумчерб.Клиент/Настройки.cs
index fccfe8b..b30f30a 100644
--- a/Млаумчерб.Клиент/Настройки.cs
+++ b/Млаумчерб.Клиент/Настройки.cs
@@ -1,5 +1,4 @@
-using DTLib.Logging;
-using Newtonsoft.Json;
+using Newtonsoft.Json;
 
 namespace Млаумчерб.Клиент;
 
diff --git a/Млаумчерб.Клиент/Ошибки.cs b/Млаумчерб.Клиент/Ошибки.cs
index b55b0eb..31a2545 100644
--- a/Млаумчерб.Клиент/Ошибки.cs
+++ b/Млаумчерб.Клиент/Ошибки.cs
@@ -1,6 +1,5 @@
 using Avalonia.Controls;
 using DTLib.Ben.Demystifier;
-using DTLib.Logging;
 using MsBox.Avalonia;
 using MsBox.Avalonia.Dto;
 using MsBox.Avalonia.Enums;
diff --git a/Млаумчерб.Клиент/классы/Буржуазия.cs b/Млаумчерб.Клиент/классы/Буржуазия.cs
index b6e4022..5b1d621 100644
--- a/Млаумчерб.Клиент/классы/Буржуазия.cs
+++ b/Млаумчерб.Клиент/классы/Буржуазия.cs
@@ -17,7 +17,8 @@ public class Os
 public class Rule
 {
     [JsonRequired] public string action { get; set; } = "";
-    [JsonRequired] public Os os { get; set; } = null!;
+    public Os? os { get; set; }
+    public Dictionary<string, bool>? features { get; set; }
 }
 
 public class Classifiers
@@ -80,6 +81,18 @@ public class JavaVersion
     [JsonRequired] public int majorVersion { get; set; }
 }
 
+public class ArgValue
+{
+    [JsonRequired] public string value { get; set; } = "";
+    public List<Rule> rules { get; set; } = new();
+}
+
+public class ArgumentsNew
+{
+    [JsonRequired] public List<ArgValue> jvm { get; set; } = new();
+    [JsonRequired] public List<ArgValue> game { get; set; } = new();
+}
+
 public class MinecraftVersionDescriptor
 {
     [JsonRequired] public string id { get; set; } = "";
@@ -94,5 +107,52 @@ public class MinecraftVersionDescriptor
     [JsonRequired] public List<Library> libraries { get; set; } = null!;
     [JsonRequired] public AssetIndex assetIndex { get; set; } = null!;
     [JsonRequired] public string assets { get; set; } = "";
-    // public string minecraftArguments { get; set; }
+    public string? minecraftArguments { get; set; }
+    public ArgumentsNew? arguments { get; set; }
+}
+
+public static class Буржуазия
+{
+    public static bool CheckOs(Os os)
+    {
+        return os.name switch
+        {
+            "osx" => OperatingSystem.IsWindows(),
+            "linux" => OperatingSystem.IsLinux(),
+            "windows" => OperatingSystem.IsWindows(),
+            _ => throw new ArgumentOutOfRangeException(os.name)
+        };
+    }
+    
+    public static bool CheckRules(ICollection<Rule> rules, ICollection<string> enabled_features)
+    {
+        bool allowed = false;
+        foreach (var r in rules)
+        {
+            if (r.os == null || CheckOs(r.os))
+            {
+                if (r.features != null)
+                {
+                    foreach (var feature in enabled_features)
+                    {
+                        if(r.features.TryGetValue(feature, out bool is_enabled))
+                        {
+                            if (is_enabled)
+                            {
+                                if (r.action == "allow")
+                                    allowed = true;
+                                else return false;
+                            }
+                        }
+                    }
+                }
+                
+                if (r.action == "allow")
+                    allowed = true;
+                else return false;
+            }
+        }
+
+        return allowed;
+    } 
 }
\ No newline at end of file
diff --git a/Млаумчерб.Клиент/классы/Пролетариат.cs b/Млаумчерб.Клиент/классы/Пролетариат.cs
index efa37f2..666a95c 100644
--- a/Млаумчерб.Клиент/классы/Пролетариат.cs
+++ b/Млаумчерб.Клиент/классы/Пролетариат.cs
@@ -1,6 +1,89 @@
-namespace Млаумчерб.Клиент.классы;
+using DTLib.Extensions;
+
+namespace Млаумчерб.Клиент.классы;
 
 public class Пролетариат
 {
     
-}
\ No newline at end of file
+}
+
+public class ArgumentsWithPlaceholders
+{
+    protected List<string> raw_args = new();
+
+    public List<string> FillPlaceholders(Dictionary<string, string> values)
+    {
+        List<string> result = new();
+        foreach (var a in raw_args)
+        {
+            var f = a;
+            int begin = a.IndexOf('$');
+            if (begin != -1)
+            {
+                int keyBegin = begin + 2;
+                int end = a.IndexOf('}', keyBegin);
+                if (end != -1)
+                {
+                    var key = a.Substring(keyBegin, end - keyBegin);
+                    if (!values.TryGetValue(key, out var v))
+                        throw new Exception($"can't find value for placeholder '{key}'");
+                    f = v;
+                }
+            }
+            result.Add(f);
+        }
+
+        return result;
+    }
+}
+
+public class JavaArguments : ArgumentsWithPlaceholders
+{
+    private static readonly string[] _initial_arguments =
+    [
+        
+    ];
+
+    private static readonly string[] _enabled_features = 
+    [
+        
+    ];
+
+    public JavaArguments(MinecraftVersionDescriptor d)
+    {
+        raw_args.AddRange(_initial_arguments);
+        if (d.arguments is not null)
+        {
+            foreach (var av in d.arguments.jvm)
+            {
+                if(Буржуазия.CheckRules(av.rules, _enabled_features))
+                    raw_args.Add(av.value);
+            }
+        }
+    }
+}
+
+public class GameArguments : ArgumentsWithPlaceholders
+{
+    private static readonly string[] _enabled_features =
+    [
+        "has_custom_resolution"
+    ];
+    
+    public GameArguments(MinecraftVersionDescriptor d)
+    {
+        if (d.minecraftArguments is not null)
+        {
+            raw_args.AddRange(d.minecraftArguments.SplitToList(' ', quot: '"'));
+        }
+        else if (d.arguments is not null)
+        {
+            foreach (var av in d.arguments.game)
+            {
+                if(Буржуазия.CheckRules(av.rules, _enabled_features))
+                    raw_args.Add(av.value);
+            }
+        }
+    }
+}
+