diff --git a/launcher/Application.cpp b/launcher/Application.cpp
index ddeb30588..0e5f3cb3b 100644
--- a/launcher/Application.cpp
+++ b/launcher/Application.cpp
@@ -825,6 +825,7 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
         m_settings->registerSetting("TPDownloadGeometry", "");
         m_settings->registerSetting("ShaderDownloadGeometry", "");
         m_settings->registerSetting("DataPackDownloadGeometry", "");
+        m_settings->registerSetting("SelectInstanceGeometry", "");
 
         // data pack window
         // in future, more pages may be added - so this name is chosen to avoid needing migration
diff --git a/launcher/minecraft/MultiWorldList.cpp b/launcher/minecraft/MultiWorldList.cpp
index 8f892f495..cb00d7b05 100644
--- a/launcher/minecraft/MultiWorldList.cpp
+++ b/launcher/minecraft/MultiWorldList.cpp
@@ -48,9 +48,9 @@
 
 #include "MinecraftInstance.h"
 
-MultiWorldList::MultiWorldList(const QList<BaseInstance*>& instances) : QAbstractListModel(), m_instances(instances)
+MultiWorldList::MultiWorldList(const QList<BaseInstance*>& instances) : QAbstractListModel(), allInstances(instances)
 {
-    for (BaseInstance* inst : m_instances) {
+    for (BaseInstance* inst : allInstances) {
         m_dirs.append(dynamic_cast<MinecraftInstance*>(inst)->worldDir());
     }
 
@@ -109,7 +109,7 @@ bool MultiWorldList::update()
 
     QList<InstanceWorld> newWorlds;
 
-    for (BaseInstance* inst : m_instances) {
+    for (BaseInstance* inst : allInstances) {
         QDir dir = dynamic_cast<MinecraftInstance*>(inst)->worldDir();
         dir.refresh();
         auto folderContents = dir.entryInfoList();
@@ -154,7 +154,7 @@ QList<QString> MultiWorldList::instDirPaths() const
 {
     QList<QString> dirList;
 
-    for (BaseInstance* instance : m_instances) { //use m_dirs??? iy
+    for (BaseInstance* instance : allInstances) {
         dirList.append(QFileInfo(instance->instanceRoot()).absoluteFilePath());
     }
 
@@ -399,14 +399,15 @@ Qt::DropActions MultiWorldList::supportedDropActions() const
     return Qt::CopyAction | Qt::MoveAction;
 }
 
-void MultiWorldList::installWorld(QFileInfo filename)
+void MultiWorldList::installWorld(BaseInstance* instance, QFileInfo filename)
 {
     qDebug() << "installing:" << filename.absoluteFilePath();
     World w(filename);
     if (!w.isValid()) {
         return;
     }
-    w.install(m_dirs[0].absolutePath()); //add option for which instance to install to iy
+    w.install(QDir(dynamic_cast<MinecraftInstance*>(instance)->worldDir()).absolutePath());
+    update();
 }
 
 bool MultiWorldList::dropMimeData(const QMimeData* data,
@@ -434,9 +435,7 @@ bool MultiWorldList::dropMimeData(const QMimeData* data,
 
             QFileInfo worldInfo(filename);
 
-            if (!m_dirs[0].entryInfoList().contains(worldInfo)) { //same as above, add option for which instance to install to iy
-                installWorld(worldInfo);
-            }
+            emit fileDropped(worldInfo);
         }
         if (was_watching)
             startWatching();
diff --git a/launcher/minecraft/MultiWorldList.h b/launcher/minecraft/MultiWorldList.h
index a8b8ae85a..ddd936892 100644
--- a/launcher/minecraft/MultiWorldList.h
+++ b/launcher/minecraft/MultiWorldList.h
@@ -53,7 +53,7 @@ class MultiWorldList : public QAbstractListModel {
     virtual bool update();
 
     /// Install a world from location
-    void installWorld(QFileInfo filename);
+    void installWorld(BaseInstance* instance, QFileInfo filename);
 
     /// Deletes the mod at the given index.
     virtual bool deleteWorld(int index);
@@ -90,17 +90,22 @@ class MultiWorldList : public QAbstractListModel {
 
     const QList<InstanceWorld>& allWorlds() const { return m_worlds; }
 
+    QList<BaseInstance*> getInstances() const { return allInstances; }
+
    private slots:
     void directoryChanged(QString path);
     void loadWorldsAsync();
 
    signals:
     void changed();
+    void fileDropped(QFileInfo worldInfo);
 
    protected:
-    QList<BaseInstance*> m_instances;
     QFileSystemWatcher* m_watcher;
     bool m_isWatching;
     QList<QDir> m_dirs;
     QList<InstanceWorld> m_worlds;
+
+   private:
+    QList<BaseInstance*> allInstances;
 };
diff --git a/launcher/ui/MultiWorldListPage.cpp b/launcher/ui/MultiWorldListPage.cpp
index fbf11f777..7c0c41062 100644
--- a/launcher/ui/MultiWorldListPage.cpp
+++ b/launcher/ui/MultiWorldListPage.cpp
@@ -60,6 +60,7 @@
 #include "ui/GuiUtil.h"
 
 #include "Application.h"
+#include "icons/IconList.h"
 #include "pages/instance/DataPackPage.h"
 
 class MultiWorldListProxyModel : public QSortFilterProxyModel {
@@ -113,6 +114,8 @@ MultiWorldListPage::MultiWorldListPage(MultiWorldList* worlds, QWidget* parent)
     connect(ui->worldTreeView->selectionModel(), &QItemSelectionModel::currentChanged, this, &MultiWorldListPage::worldChanged);
     connect(ui->worldTreeView, &QAbstractItemView::doubleClicked, this, &MultiWorldListPage::worldDoubleClicked);
     worldChanged(QModelIndex(), QModelIndex());
+
+    connect(m_worlds, &MultiWorldList::fileDropped, this, &MultiWorldListPage::fileDropped);
 }
 
 void MultiWorldListPage::openedImpl()
@@ -400,7 +403,11 @@ void MultiWorldListPage::on_actionAdd_triggered()
     if (!list.empty()) {
         m_worlds->stopWatching();
         for (auto filename : list) {
-            m_worlds->installWorld(QFileInfo(filename));
+            auto *instance = selectInstance(tr("Select instance to add world '%1' to.").arg(QFileInfo(filename).fileName()));
+
+            if (instance != nullptr) {
+                m_worlds->installWorld(instance, QFileInfo(filename));
+            }
         }
         m_worlds->startWatching();
     }
@@ -434,16 +441,68 @@ void MultiWorldListPage::on_actionCopy_triggered()
         return;
 
     auto worldVariant = m_worlds->data(index, MultiWorldList::ObjectRole);
-    auto world = (World*)worldVariant.value<void*>();
+    auto *world = static_cast<InstanceWorld*>(worldVariant.value<void*>());
+
     bool ok = false;
     QString name =
-        QInputDialog::getText(this, tr("World name"), tr("Enter a new name for the copy."), QLineEdit::Normal, world->name(), &ok);
+        QInputDialog::getText(this, tr("World name"), tr("Enter a new name for the copy."), QLineEdit::Normal, world->world.name(), &ok);
 
     if (ok && name.length() > 0) {
-        world->install(m_worlds->dirs()[0].absolutePath(), name); //ask which instance iy
+        auto *instance = selectInstance(tr("Select instance to copy world to."), world->instance);
+
+        if (instance != nullptr) {
+            world->world.install((QDir(instance->worldDir())).absolutePath(), name);
+            m_worlds->update();
+        }
     }
 }
 
+Q_DECLARE_METATYPE(BaseInstance*);
+
+MinecraftInstance* MultiWorldListPage::selectInstance(const QString& message, BaseInstance* preselectedInstance)
+{
+    auto *dialog = new QDialog(this);
+    dialog->setWindowTitle(tr("Select Instance"));
+
+    dialog->resize(static_cast<int>(std::max(0.5 * window()->width(), 400.0)),
+                   static_cast<int>(std::max(0.75 * window()->height(), 400.0)));
+    dialog->restoreGeometry(QByteArray::fromBase64(APPLICATION->settings()->get("SelectInstanceGeometry").toByteArray()));
+
+    auto layout = new QVBoxLayout(dialog);
+
+    layout->addWidget(new QLabel(message));
+
+    auto instanceList = new QListWidget(dialog);
+
+    for (auto instance : m_worlds->getInstances()) {
+        auto *item = new QListWidgetItem(instanceList);
+        item->setText(instance->name());
+        item->setIcon(APPLICATION->icons()->getIcon(instance->iconKey()));
+        item->setData(Qt::UserRole, QVariant::fromValue(instance));
+        if (instance == preselectedInstance) {
+            instanceList->setCurrentItem(item);
+        }
+    }
+
+    layout->addWidget(instanceList);
+
+    auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+    connect(buttonBox, &QDialogButtonBox::rejected, dialog, &QDialog::reject);
+    connect(buttonBox, &QDialogButtonBox::accepted, dialog, &QDialog::accept);
+    layout->addWidget(buttonBox);
+
+    dialog->setLayout(layout);
+
+    connect(dialog, &QDialog::finished, this,
+            [dialog]() { APPLICATION->settings()->set("SelectInstanceGeometry", dialog->saveGeometry().toBase64()); });
+
+    if (dialog->exec() == QDialog::Accepted) {
+        return static_cast<MinecraftInstance*>(instanceList->currentItem()->data(Qt::UserRole).value<BaseInstance*>());
+    }
+
+    return nullptr;
+}
+
 void MultiWorldListPage::on_actionRename_triggered()
 {
     QModelIndex index = getSelectedWorld();
@@ -495,6 +554,17 @@ void MultiWorldListPage::worldDoubleClicked(const QModelIndex& index)
     join(proxy->mapToSource(index));
 }
 
+void MultiWorldListPage::fileDropped(const QFileInfo& worldInfo)
+{
+    auto *instance = selectInstance(tr("Select instance to add world '%1' to.").arg(worldInfo.fileName()));
+
+    if (instance != nullptr) {
+        if (!QDir(instance->worldDir()).entryInfoList().contains(worldInfo)) {
+            m_worlds->installWorld(instance, worldInfo);
+        }
+    }
+}
+
 void MultiWorldListPage::on_actionJoin_triggered()
 {
     QModelIndex index = getSelectedWorld();
diff --git a/launcher/ui/MultiWorldListPage.h b/launcher/ui/MultiWorldListPage.h
index 3114172e8..848bd5a41 100644
--- a/launcher/ui/MultiWorldListPage.h
+++ b/launcher/ui/MultiWorldListPage.h
@@ -79,6 +79,7 @@ class MultiWorldListPage : public QMainWindow, public BasePage {
     bool worldSafetyNagQuestion(const QString& actionType);
     void mceditError();
     void join(QModelIndex index);
+    MinecraftInstance* selectInstance(const QString& message, BaseInstance* instance = nullptr);
 
    private:
     Ui::MultiWorldListPage* ui;
@@ -105,6 +106,7 @@ class MultiWorldListPage : public QMainWindow, public BasePage {
     void mceditState(LoggedProcess::State state);
     void on_actionJoin_triggered();
     void worldDoubleClicked(const QModelIndex& index);
+    void fileDropped(const QFileInfo& worldInfo);
 
     void ShowContextMenu(const QPoint& pos);
 };