diff --git a/src/Interface/Tabs/Plugin.as b/src/Interface/Tabs/Plugin.as
index b452ca4..7a02a7a 100644
--- a/src/Interface/Tabs/Plugin.as
+++ b/src/Interface/Tabs/Plugin.as
@@ -2,6 +2,7 @@ class PluginTab : Tab
 {
 	Net::HttpRequest@ m_requestMain;
 	Net::HttpRequest@ m_requestChangelog;
+	Net::HttpRequest@ m_requestDependencies;
 
 	bool m_error = false;
 	string m_errorMessage;
@@ -61,6 +62,15 @@ class PluginTab : Tab
 		}
 	}
 
+	void CheckRequestDependencies()
+	{
+		// If there's a request, check if it has finished
+		if (m_requestDependencies !is null && m_requestDependencies.Finished()) {
+			API::GetPluginListPost(m_requestDependencies);
+			@m_requestDependencies = null;
+		}
+	}
+
 	void CheckRequestChangelog()
 	{
 		// If there's a request, check if it has finished
@@ -88,6 +98,10 @@ class PluginTab : Tab
 	void HandleResponse(const Json::Value &in js)
 	{
 		@m_plugin = PluginInfo(js);
+		string[] missingDeps = m_plugin.GetMissingDeps();
+		if (missingDeps.Length > 0) {
+			@m_requestDependencies = API::GetPluginList(missingDeps);
+		}
 	}
 
 	void HandleErrorResponse(const string &in message, int code)
@@ -121,15 +135,43 @@ class PluginTab : Tab
 		return true;
 	}
 
+	bool HasMissingRequirements()
+	{
+		if (m_plugin.m_dep_req.Length == 0) return false;
+
+		for (uint i = 0; i < m_plugin.m_dep_req.Length; i++) {
+			auto plug = Meta::GetPluginFromID(m_plugin.m_dep_req[i]);
+			if (plug is null) return true;
+		}
+		return false;
+	}
+
 	void InstallAsync()
 	{
 		m_updating = true;
 
+		// install any required dependents first
+		string[] missingDeps = m_plugin.GetMissingDeps();
+		for (uint i = 0; i < missingDeps.Length; i++) {
+			PluginInfo@ dep = API::getCachedPluginInfo(missingDeps[i]);
+
+			if (dep is null) {
+				error("Unable to find required plugin info: " + missingDeps[i]);
+				continue;
+			}
+
+			PluginInstallAsync(dep.m_siteID, dep.m_id, dep.m_version);
+		}
+
 		PluginInstallAsync(m_plugin.m_siteID, m_plugin.m_id, m_plugin.m_version);
 
 		m_plugin.m_downloads++;
 		m_plugin.CheckIfInstalled();
 		m_updating = false;
+
+		if (missingDeps.Length > 0) {
+			@m_requestDependencies = API::GetPluginList(missingDeps);
+		}
 	}
 
 	void UpdateAsync()
@@ -195,6 +237,11 @@ class PluginTab : Tab
 			if (UI::GreenButton(Icons::Download + " Install")) {
 				startnew(CoroutineFunc(InstallAsync));
 			}
+			if (UI::IsItemHovered() && HasMissingRequirements()) {
+				UI::BeginTooltip();
+				UI::Text("Note: this will also install any missing required dependencies listed below.");
+				UI::EndTooltip();
+			}
 			return;
 		}
 
@@ -212,12 +259,58 @@ class PluginTab : Tab
 		}
 	}
 
+	void RenderDependency(const string &in dep)
+	{
+		// is the plugin installed?
+		auto plug = Meta::GetPluginFromID(dep);
+		if (plug !is null) {
+			if (plug.Source == Meta::PluginSource::ApplicationFolder) { // openplanet bundled
+				UI::Text("\\$f39" + Icons::Heartbeat + "\\$z" + plug.Name + " \\$666(built-in)");
+			} else {
+				UI::Text(plug.Name + " \\$666(installed)");
+				if (UI::IsItemClicked()) {
+					g_window.AddTab(PluginTab(plug.SiteID), true);
+				}
+				if (UI::IsItemHovered()) {
+					UI::SetMouseCursor(UI::MouseCursor::Hand);
+					UI::BeginTooltip();
+					UI::Text(plug.Name + " \\$999by " + plug.Author + " \\$666(" + plug.Version + " installed)");
+					UI::Text("Click to open this plugin in a new tab.");
+					UI::EndTooltip();
+				}
+			}
+		} else {
+			// plugin not installed, let's see what info we have on it...
+			PluginInfo@ x = API::getCachedPluginInfo(dep);
+			if (x !is null) {
+				// not installed but we have info
+				UI::Text("\\$999"+x.m_name);
+				if (UI::IsItemClicked()) {
+					g_window.AddTab(PluginTab(x.m_siteID), true);
+				}
+				if (UI::IsItemHovered()) {
+					UI::SetMouseCursor(UI::MouseCursor::Hand);
+					UI::BeginTooltip();
+					UI::Text(x.m_name + " \\$999by " + x.m_author);
+					UI::Text("Click to open this plugin in a new tab.");
+					UI::EndTooltip();
+				}
+
+			} else {
+				// no fukken clue
+				UI::Text("Unknown plugin '"+dep+"'");
+			}
+
+		}
+	}
+
 	void Render() override
 	{
 		float scale = UI::GetScale();
 
 		CheckRequestMain();
 		CheckRequestChangelog();
+		CheckRequestDependencies();
 
 		if (m_requestMain !is null) {
 			UI::Text("Loading plugin..");
@@ -271,6 +364,36 @@ class PluginTab : Tab
 			OpenBrowserURL(m_plugin.m_donateURL);
 		}
 
+		if (m_plugin.m_dep_req.Length + m_plugin.m_dep_opt.Length > 0) {
+			UI::Separator();
+			if (m_plugin.m_dep_req.Length > 0) {
+				if (UI::TreeNode("Required dependencies:", UI::TreeNodeFlags::DefaultOpen)) {
+					if (UI::IsItemHovered()) {
+						UI::BeginTooltip();
+						UI::Text("This plugin will not work without all of these plugins installed");
+						UI::EndTooltip();
+					}
+					for (uint i = 0; i < m_plugin.m_dep_req.Length; i++) {
+						RenderDependency(m_plugin.m_dep_req[i]);
+					}
+					UI::TreePop();
+				}
+			}
+			if (m_plugin.m_dep_opt.Length > 0) {
+				if (UI::TreeNode("Optional dependencies:", UI::TreeNodeFlags::DefaultOpen)) {
+					if (UI::IsItemHovered()) {
+						UI::BeginTooltip();
+						UI::Text("This plugin provides enhanced functionality if these plugins are installed");
+						UI::EndTooltip();
+					}
+					for (uint i = 0; i < m_plugin.m_dep_opt.Length; i++) {
+						RenderDependency(m_plugin.m_dep_opt[i]);
+					}
+					UI::TreePop();
+				}
+			}
+		}
+
 		UI::EndChild();
 
 		// Right side of the window
diff --git a/src/Update.as b/src/Update.as
index 715babf..cabe2d2 100644
--- a/src/Update.as
+++ b/src/Update.as
@@ -60,6 +60,18 @@ void PluginUpdateAsync(ref@ update)
 		return;
 	}
 
+	// install any unmet dependencies
+	for (uint i = 0; i < au.m_requirements.Length; i++) {
+		auto plug = Meta::GetPluginFromID(au.m_requirements[i]);
+		if (plug is null) {
+			PluginInfo@ dep = API::getCachedPluginInfo(au.m_requirements[i]);
+			if (dep is null) {
+				error("Unable to find required plugin info: " + au.m_requirements[i]);
+				continue;
+			}
+			PluginInstallAsync(dep.m_siteID, dep.m_id, dep.m_version);
+		}
+	}
 	// If the plugin is currently loaded
 	auto installedPlugin = Meta::GetPluginFromSiteID(au.m_siteID);
 	if (installedPlugin !is null) {
diff --git a/src/UpdateCheck.as b/src/UpdateCheck.as
index 2eb7fb2..b0b2fb4 100644
--- a/src/UpdateCheck.as
+++ b/src/UpdateCheck.as
@@ -5,6 +5,18 @@ class AvailableUpdate
 	string m_identifier;
 	string m_oldVersion;
 	string m_newVersion;
+	string[] m_requirements;
+
+	bool HasMissingRequirements()
+	{
+		if (m_requirements.Length == 0) return false;
+
+		for (uint i = 0; i < m_requirements.Length; i++) {
+			auto plug = Meta::GetPluginFromID(m_requirements[i]);
+			if (plug is null) return true;
+		}
+		return false;
+	}
 }
 
 array<AvailableUpdate@> g_availableUpdates;
@@ -65,6 +77,8 @@ void CheckForUpdatesAsync()
 		return;
 	}
 
+	string[] needDepInfo;
+
 	// Go through returned list of versions
 	for (uint i = 0; i < js.Length; i++) {
 		auto jsVersion = js[i];
@@ -97,9 +111,23 @@ void CheckForUpdatesAsync()
 		au.m_identifier = siteIdentifier;
 		au.m_oldVersion = info.m_version.ToString();
 		au.m_newVersion = siteVersion;
+
+		if (jsVersion["required_dependencies"] == Json::Type::Array) {
+			for (uint d = 0; d < jsVersion["required_dependencies"].Length; d++) {
+				au.m_requirements.InsertLast(jsVersion["required_dependencies"][d]);
+				if (API::getCachedPluginInfo(jsVersion["required_dependencies"][d]) is null) {
+					needDepInfo.InsertLast(jsVersion["required_dependencies"][d]);
+				}
+			}
+		}
+
 		g_availableUpdates.InsertLast(au);
 	}
 
+	if (needDepInfo.Length > 0) {
+		API::GetPluginListAsync(needDepInfo);
+	}
+
 	if (g_availableUpdates.Length == 0) {
 		trace("No plugin updates found!");
 	}
diff --git a/src/Utils/API.as b/src/Utils/API.as
index b91f33b..83555ee 100644
--- a/src/Utils/API.as
+++ b/src/Utils/API.as
@@ -24,4 +24,78 @@ namespace API
 		}
 		return Json::Parse(req.String());
 	}
+
+	void GetPluginListAsync(string[] missing)
+	{
+		uint pages = 1;
+
+		string fetchMissing = string::Join(missing, ',');
+		if (fetchMissing.Length > 0) {
+			for (uint i = 0; i < pages; i++) {
+				Json::Value req = GetAsync("plugins?idents=" + fetchMissing + "&page=" + i);
+
+				if (pages == 1 && req["pages"] != 1) {
+					pages = req["pages"];
+				}
+
+				for (uint ii = 0; ii < req["items"].Length; ii++) {
+					// kill any existing values
+					for (uint iii = 0; iii < g_cachedAPIPluginList.Length; iii++) { // how deep can we go
+						if (string(g_cachedAPIPluginList[iii]['identifier']) == string(req["items"][ii]['identifier'])) {
+							g_cachedAPIPluginList.RemoveAt(iii);
+						}
+					}
+
+					g_cachedAPIPluginList.InsertLast(req["items"][ii]);
+				}
+
+				// nap a bit so we dont wreck the Openplanet API...
+				sleep(500);
+			}
+		}
+	}
+
+	/**
+	 * special version of GetPluginListAsync for use in Render contexts
+	 *
+	 * only supports a single page, but its only use case is in PluginTab
+	 * and if there's enough deps to cause pagination you can fuck right off.
+	 */
+	Net::HttpRequest@ GetPluginList(string[] missing)
+	{
+		string fetchMissing = string::Join(missing, ',');
+		Net::HttpRequest@ req = Get("plugins?idents=" + fetchMissing);
+		return req;
+	}
+
+	void GetPluginListPost(Net::HttpRequest@ request)
+	{
+		Json::Value req = Json::Parse(request.String());
+		for (uint ii = 0; ii < req["items"].Length; ii++) {
+				// kill any existing values
+				for (uint iii = 0; iii < g_cachedAPIPluginList.Length; iii++) { // how deep can we go
+					if (string(g_cachedAPIPluginList[iii]['identifier']) == string(req["items"][ii]['identifier'])) {
+						g_cachedAPIPluginList.RemoveAt(iii);
+					}
+				}
+
+				g_cachedAPIPluginList.InsertLast(req["items"][ii]);
+			}
+	}
+
+	PluginInfo@ getCachedPluginInfo(const string &in ident)
+	{
+		Json::Value@ js;
+		for (uint i = 0; i < g_cachedAPIPluginList.Length; i++) {
+			if (string(g_cachedAPIPluginList[i]['identifier']).ToLower() == ident.ToLower()) {
+				@js = g_cachedAPIPluginList[i];
+			}
+		}
+		if (js !is null) {
+			// not installed but we have info
+			return PluginInfo(js);
+		} else {
+			return null;
+		}
+	}
 }
diff --git a/src/Utils/PluginInfo.as b/src/Utils/PluginInfo.as
index 270edbf..056dbe6 100644
--- a/src/Utils/PluginInfo.as
+++ b/src/Utils/PluginInfo.as
@@ -28,6 +28,11 @@ class PluginInfo
 	array<TagInfo@> m_tags;
 	array<PluginChangelog@> m_changelogs;
 
+	array<string> m_dep_req;
+	array<string> m_dep_opt;
+
+	Json::Value@ m_dep_info;
+
 	bool m_isInstalled;
 
 	Net::HttpRequest@ m_changelogRequest;
@@ -50,12 +55,24 @@ class PluginInfo
 			m_description = js["description"];
 		}
 
-        if (js.HasKey("links")) {
-            auto jsLinks = js["links"];
-            m_donateURL = jsLinks["donate"].GetType() == Json::Type::String ? jsLinks["donate"] : ""; // setting to null instead of "" crashes openplanet compiler
-            m_sourceURL = jsLinks["source"].GetType() == Json::Type::String ? jsLinks["source"] : "";
-            m_issuesURL = jsLinks["issues"].GetType() == Json::Type::String ? jsLinks["issues"] : "";
-        }
+		if (js.HasKey("links")) {
+				auto jsLinks = js["links"];
+				m_donateURL = jsLinks["donate"].GetType() == Json::Type::String ? jsLinks["donate"] : ""; // setting to null instead of "" crashes openplanet compiler
+				m_sourceURL = jsLinks["source"].GetType() == Json::Type::String ? jsLinks["source"] : "";
+				m_issuesURL = jsLinks["issues"].GetType() == Json::Type::String ? jsLinks["issues"] : "";
+		}
+
+		if (js.HasKey("dependencies") && js["dependencies"].GetType() == Json::Type::Array) {
+			for (uint i = 0; i < js["dependencies"].Length; i++) {
+				m_dep_req.InsertLast(js["dependencies"][i]);
+			}
+		}
+
+		if (js.HasKey("optional_dependencies") && js["optional_dependencies"].GetType() == Json::Type::Array) {
+			for (uint i = 0; i < js["optional_dependencies"].Length; i++) {
+				m_dep_opt.InsertLast(js["optional_dependencies"][i]);
+			}
+		}
 
 		m_filesize = js["filesize"];
 		m_signed = js["signed"];
@@ -121,6 +138,32 @@ class PluginInfo
 		}
 	}
 
+	void LoadDependencyInfo()
+	{
+		string[] missingDeps = GetMissingDeps();
+		if (missingDeps.Length > 0) {
+			API::GetPluginListAsync(missingDeps);
+		}
+	}
+
+	string[] GetMissingDeps()
+	{
+		string[] missingDeps;
+		for (uint i = 0; i < m_dep_req.Length; i++) {
+			if (Meta::GetPluginFromID(m_dep_req[i]) is null) {
+				missingDeps.InsertLast(m_dep_req[i]);
+			}
+		}
+
+		// copy paste for optionals
+		for (uint i = 0; i < m_dep_opt.Length; i++) {
+			if (Meta::GetPluginFromID(m_dep_opt[i]) is null) {
+				missingDeps.InsertLast(m_dep_opt[i]);
+			}
+		}
+		return missingDeps;
+	}
+
 	void LoadChangelog()
 	{
 		@m_changelogRequest = API::Get("plugin/" + m_siteID + "/versions");
diff --git a/src/main.as b/src/main.as
index 53cc537..988b30a 100644
--- a/src/main.as
+++ b/src/main.as
@@ -1,4 +1,5 @@
 UI::Font@ g_fontHeader;
+Json::Value@[] g_cachedAPIPluginList;
 UI::Font@ g_fontSubHeader;
 
 void Main()