diff --git a/sagasu/include/filetreemodel.h b/sagasu/include/filetreemodel.h
index 65f4afe..0ed6f05 100644
--- a/sagasu/include/filetreemodel.h
+++ b/sagasu/include/filetreemodel.h
@@ -26,7 +26,7 @@ class FileTreeModel : public QAbstractItemModel
     Q_OBJECT
 
 public:
-    explicit FileTreeModel(QString gamePath, GameData *data);
+    explicit FileTreeModel(bool showUnknown, QString gamePath, GameData *data);
 
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
     int columnCount(const QModelIndex &parent = QModelIndex()) const override;
@@ -48,4 +48,5 @@ private:
     QHash<uint32_t, TreeInformation *> knownDirHashes;
 
     HashDatabase m_database;
+    bool m_showUnknown = false;
 };
\ No newline at end of file
diff --git a/sagasu/include/filetreewindow.h b/sagasu/include/filetreewindow.h
index 43d5429..5df53f5 100644
--- a/sagasu/include/filetreewindow.h
+++ b/sagasu/include/filetreewindow.h
@@ -3,7 +3,8 @@
 
 #pragma once
 
-#include <QMdiSubWindow>
+#include <QCheckBox>
+#include <QSortFilterProxyModel>
 #include <physis.hpp>
 
 #include "filetreemodel.h"
@@ -19,6 +20,11 @@ Q_SIGNALS:
     void pathSelected(QString path);
 
 private:
+    void refreshModel();
+
     GameData *data = nullptr;
     FileTreeModel *m_fileModel;
+    QSortFilterProxyModel *m_searchModel;
+    QCheckBox *m_unknownCheckbox;
+    QString m_gamePath;
 };
\ No newline at end of file
diff --git a/sagasu/src/filetreemodel.cpp b/sagasu/src/filetreemodel.cpp
index 9cae4d0..bc489b4 100644
--- a/sagasu/src/filetreemodel.cpp
+++ b/sagasu/src/filetreemodel.cpp
@@ -6,8 +6,9 @@
 
 #include <QtConcurrent>
 
-FileTreeModel::FileTreeModel(QString gamePath, GameData *data)
+FileTreeModel::FileTreeModel(bool showUnknown, QString gamePath, GameData *data)
     : gameData(data)
+    , m_showUnknown(showUnknown)
     , QAbstractItemModel()
 {
     rootItem = new TreeInformation();
@@ -176,6 +177,10 @@ void FileTreeModel::addKnownFolder(QString string)
 
 void FileTreeModel::addFile(TreeInformation *parentItem, uint32_t name, QString realName)
 {
+    if (realName.isEmpty() && !m_showUnknown) {
+        return;
+    }
+
     auto fileItem = new TreeInformation();
     fileItem->hash = name;
     fileItem->name = realName;
@@ -187,6 +192,10 @@ void FileTreeModel::addFile(TreeInformation *parentItem, uint32_t name, QString
 
 void FileTreeModel::addFolder(TreeInformation *parentItem, uint32_t name)
 {
+    if (!m_showUnknown) {
+        return;
+    }
+
     auto fileItem = new TreeInformation();
     fileItem->hash = name;
     fileItem->type = TreeType::Folder;
diff --git a/sagasu/src/filetreewindow.cpp b/sagasu/src/filetreewindow.cpp
index ea71f74..de602da 100644
--- a/sagasu/src/filetreewindow.cpp
+++ b/sagasu/src/filetreewindow.cpp
@@ -4,22 +4,43 @@
 #include "filetreewindow.h"
 
 #include <QHBoxLayout>
+#include <QLineEdit>
 #include <QMenu>
 #include <QTreeWidget>
 
 FileTreeWindow::FileTreeWindow(QString gamePath, GameData *data, QWidget *parent)
     : QWidget(parent)
+    , m_gamePath(gamePath)
     , data(data)
 {
-    setWindowTitle(QStringLiteral("File Tree"));
-
-    auto layout = new QHBoxLayout();
+    auto layout = new QVBoxLayout();
+    layout->setContentsMargins(0, 0, 0, 0);
     setLayout(layout);
 
-    m_fileModel = new FileTreeModel(gamePath, data);
+    m_searchModel = new QSortFilterProxyModel();
+    m_searchModel->setRecursiveFilteringEnabled(true);
+    m_searchModel->setFilterCaseSensitivity(Qt::CaseSensitivity::CaseInsensitive);
+
+    auto searchLayout = new QHBoxLayout();
+    layout->addLayout(searchLayout);
+
+    auto searchEdit = new QLineEdit();
+    searchEdit->setPlaceholderText(QStringLiteral("Search..."));
+    searchEdit->setClearButtonEnabled(true);
+    connect(searchEdit, &QLineEdit::textChanged, this, [this](const QString &text) {
+        m_searchModel->setFilterRegularExpression(text);
+    });
+    searchLayout->addWidget(searchEdit);
+
+    m_unknownCheckbox = new QCheckBox();
+    m_unknownCheckbox->setToolTip(QStringLiteral("Show unknown files and folders."));
+    connect(m_unknownCheckbox, &QCheckBox::clicked, this, [this] {
+        refreshModel();
+    });
+    searchLayout->addWidget(m_unknownCheckbox);
 
     auto treeWidget = new QTreeView();
-    treeWidget->setModel(m_fileModel);
+    treeWidget->setModel(m_searchModel);
     layout->addWidget(treeWidget);
 
     treeWidget->setContextMenuPolicy(Qt::CustomContextMenu);
@@ -46,6 +67,15 @@ FileTreeWindow::FileTreeWindow(QString gamePath, GameData *data, QWidget *parent
             Q_EMIT pathSelected(path);
         }
     });
+
+    refreshModel();
+}
+
+void FileTreeWindow::refreshModel()
+{
+    // TODO: this should really be handled by the proxy
+    m_fileModel = new FileTreeModel(m_unknownCheckbox->isChecked(), m_gamePath, data);
+    m_searchModel->setSourceModel(m_fileModel);
 }
 
 #include "moc_filetreewindow.cpp"
\ No newline at end of file