diff --git a/libraries/ZWidget/src/widgets/lineedit/lineedit.cpp b/libraries/ZWidget/src/widgets/lineedit/lineedit.cpp
index 0d4c3738c..bab04c3fb 100644
--- a/libraries/ZWidget/src/widgets/lineedit/lineedit.cpp
+++ b/libraries/ZWidget/src/widgets/lineedit/lineedit.cpp
@@ -1066,8 +1066,8 @@ void LineEdit::OnPaintFrame(Canvas* canvas)
 {
 	double w = GetFrameGeometry().width;
 	double h = GetFrameGeometry().height;
-	Colorf bordercolor = Colorf::fromRgba8(200, 200, 200);
-	canvas->fillRect(Rect::xywh(0.0, 0.0, w, h), Colorf::fromRgba8(255, 255, 255));
+	Colorf bordercolor = Colorf::fromRgba8(100, 100, 100);
+	canvas->fillRect(Rect::xywh(0.0, 0.0, w, h), Colorf::fromRgba8(38, 38, 38));
 	canvas->fillRect(Rect::xywh(0.0, 0.0, w, 1.0), bordercolor);
 	canvas->fillRect(Rect::xywh(0.0, h - 1.0, w, 1.0), bordercolor);
 	canvas->fillRect(Rect::xywh(0.0, 0.0, 1.0, h - 0.0), bordercolor);
@@ -1096,21 +1096,21 @@ void LineEdit::OnPaint(Canvas* canvas)
 	{
 		// Draw selection box.
 		Rect selection_rect = GetSelectionRect();
-		canvas->fillRect(selection_rect, HasFocus() ? Colorf::fromRgba8(153, 201, 239) : Colorf::fromRgba8(229, 235, 241));
+		canvas->fillRect(selection_rect, HasFocus() ? Colorf::fromRgba8(100, 100, 100) : Colorf::fromRgba8(68, 68, 68));
 	}
 
 	// Draw text before selection
 	if (!txt_before.empty())
 	{
-		canvas->drawText(Point(0.0, canvas->verticalTextAlign().baseline), Colorf::fromRgba8(0, 0, 0), txt_before);
+		canvas->drawText(Point(0.0, canvas->verticalTextAlign().baseline), Colorf::fromRgba8(255, 255, 255), txt_before);
 	}
 	if (!txt_selected.empty())
 	{
-		canvas->drawText(Point(size_before.width, canvas->verticalTextAlign().baseline), Colorf::fromRgba8(0, 0, 0), txt_selected);
+		canvas->drawText(Point(size_before.width, canvas->verticalTextAlign().baseline), Colorf::fromRgba8(255, 255, 255), txt_selected);
 	}
 	if (!txt_after.empty())
 	{
-		canvas->drawText(Point(size_before.width + size_selected.width, canvas->verticalTextAlign().baseline), Colorf::fromRgba8(0, 0, 0), txt_after);
+		canvas->drawText(Point(size_before.width + size_selected.width, canvas->verticalTextAlign().baseline), Colorf::fromRgba8(255, 255, 255), txt_after);
 	}
 
 	// draw cursor
@@ -1119,7 +1119,7 @@ void LineEdit::OnPaint(Canvas* canvas)
 		if (cursor_blink_visible)
 		{
 			Rect cursor_rect = GetCursorRect();
-			canvas->fillRect(cursor_rect, Colorf::fromRgba8(0, 0, 0));
+			canvas->fillRect(cursor_rect, Colorf::fromRgba8(255, 255, 255));
 		}
 	}
 }
diff --git a/src/common/widgets/launcherwindow.cpp b/src/common/widgets/launcherwindow.cpp
index e37edd523..5dd99e760 100644
--- a/src/common/widgets/launcherwindow.cpp
+++ b/src/common/widgets/launcherwindow.cpp
@@ -11,6 +11,7 @@
 #include <zwidget/widgets/textlabel/textlabel.h>
 #include <zwidget/widgets/pushbutton/pushbutton.h>
 #include <zwidget/widgets/checkboxlabel/checkboxlabel.h>
+#include <zwidget/widgets/lineedit/lineedit.h>
 
 EXTERN_CVAR(Bool, queryiwad);
 
@@ -43,6 +44,7 @@ LauncherWindow::LauncherWindow(WadStuff* wads, int numwads, int defaultiwad, int
 	SelectLabel = new TextLabel(this);
 	GeneralLabel = new TextLabel(this);
 	ExtrasLabel = new TextLabel(this);
+	ParametersLabel = new TextLabel(this);
 	FullscreenCheckbox = new CheckboxLabel(this);
 	DisableAutoloadCheckbox = new CheckboxLabel(this);
 	DontAskAgainCheckbox = new CheckboxLabel(this);
@@ -52,6 +54,7 @@ LauncherWindow::LauncherWindow(WadStuff* wads, int numwads, int defaultiwad, int
 	PlayButton = new PushButton(this);
 	ExitButton = new PushButton(this);
 	GamesList = new ListView(this);
+	ParametersEdit = new LineEdit(this);
 
 	PlayButton->OnClick = [=]() { OnPlayButtonClicked(); };
 	ExitButton->OnClick = [=]() { OnExitButtonClicked(); };
@@ -69,6 +72,7 @@ LauncherWindow::LauncherWindow(WadStuff* wads, int numwads, int defaultiwad, int
 	LightsCheckbox->SetText("Lights");
 	BrightmapsCheckbox->SetText("Brightmaps");
 	WidescreenCheckbox->SetText("Widescreen");
+	ParametersLabel->SetText("Additional Parameters:");
 
 	FString welcomeText, versionText;
 	welcomeText.Format("Welcome to %s!", GAMENAME);
@@ -122,6 +126,12 @@ void LauncherWindow::OnPlayButtonClicked()
 	if (WidescreenCheckbox->GetChecked()) flags |= 8;
 	*AutoloadFlags = flags;
 
+	std::string extraargs = ParametersEdit->GetText();
+	if (!extraargs.empty())
+	{
+		// To do: restart the process like the cocoa backend is doing?
+	}
+
 	ExecResult = GamesList->GetSelectedItem();
 	DisplayWindow::ExitLoop();
 }
@@ -165,6 +175,16 @@ void LauncherWindow::OnGeometryChanged()
 
 	y -= 20.0;
 
+	double editHeight = 24.0;
+	y -= editHeight;
+	ParametersEdit->SetFrameGeometry(20.0, y, GetWidth() - 40.0, editHeight);
+	y -= 5.0;
+
+	double labelHeight = ParametersLabel->GetPreferredHeight();
+	y -= labelHeight;
+	ParametersLabel->SetFrameGeometry(20.0, y, GetWidth() - 40.0, labelHeight);
+	y -= 10.0;
+
 	double panelWidth = 150.0;
 	y -= DontAskAgainCheckbox->GetPreferredHeight();
 	DontAskAgainCheckbox->SetFrameGeometry(20.0, y, 190.0, DontAskAgainCheckbox->GetPreferredHeight());
diff --git a/src/common/widgets/launcherwindow.h b/src/common/widgets/launcherwindow.h
index d367aaafc..d34bf8ee7 100644
--- a/src/common/widgets/launcherwindow.h
+++ b/src/common/widgets/launcherwindow.h
@@ -7,6 +7,7 @@ class TextLabel;
 class CheckboxLabel;
 class PushButton;
 class ListView;
+class LineEdit;
 struct WadStuff;
 
 class LauncherWindow : public Widget
@@ -30,6 +31,7 @@ private:
 	TextLabel* SelectLabel = nullptr;
 	TextLabel* GeneralLabel = nullptr;
 	TextLabel* ExtrasLabel = nullptr;
+	TextLabel* ParametersLabel = nullptr;
 	CheckboxLabel* FullscreenCheckbox = nullptr;
 	CheckboxLabel* DisableAutoloadCheckbox = nullptr;
 	CheckboxLabel* DontAskAgainCheckbox = nullptr;
@@ -39,6 +41,7 @@ private:
 	PushButton* PlayButton = nullptr;
 	PushButton* ExitButton = nullptr;
 	ListView* GamesList = nullptr;
+	LineEdit* ParametersEdit = nullptr;
 
 	int* AutoloadFlags = nullptr;
 	int ExecResult = -1;