diff --git a/README.md b/README.md
index 8467cfaf..3645e950 100644
--- a/README.md
+++ b/README.md
@@ -236,7 +236,7 @@ After completing the installation start up the controller and at least one host
 The installer provides the `run-controller` and `run-host` scripts to make this simple.
 Once the controller process is running you can log into the web interface which is hosted by default on http://localhost:8080/ (adjust the port number if you changed it), use the admin authentication token provided from the installation to log in.
 
-The basics of setting up a Factorio server from the web interface is to create an instance, assign it to a host and then click start.
+The basics of setting up a Factorio server from the web interface is to create an instance, assign it to a host and then click start. You can also use the "Connect via Steam" button to launch Factorio directly and connect to the server using Steam's protocol handler.
 
 ### Running via Systemd
 
diff --git a/packages/web_ui/src/components/InstanceList.tsx b/packages/web_ui/src/components/InstanceList.tsx
index 7c05fd41..3c3a67ab 100644
--- a/packages/web_ui/src/components/InstanceList.tsx
+++ b/packages/web_ui/src/components/InstanceList.tsx
@@ -1,6 +1,6 @@
 import React from "react";
 import { useNavigate } from "react-router-dom";
-import { message, Button, Space, Table, Typography } from "antd";
+import { message, Button, Table } from "antd";
 import CopyOutlined from "@ant-design/icons/CopyOutlined";
 import type { SizeType } from "antd/es/config-provider/SizeContext";
 import type { ColumnsType } from "antd/es/table";
@@ -9,13 +9,14 @@ import { useAccount } from "../model/account";
 import { useHosts } from "../model/host";
 import InstanceStatusTag from "./InstanceStatusTag";
 import StartStopInstanceButton from "./StartStopInstanceButton";
-import { InstanceDetails, integerFactorioVersion } from "@clusterio/lib";
+import * as lib from "@clusterio/lib";
 import Link from "./Link";
+import { instancePublicAddress } from "../util/instance";
 
 const strcmp = new Intl.Collator(undefined, { numeric: true, sensitivity: "base" }).compare;
 
 type InstanceListProps = {
-	instances: ReadonlyMap<number, Readonly<InstanceDetails>>;
+	instances: ReadonlyMap<number, Readonly<lib.InstanceDetails>>;
 	size?: SizeType;
 	hideAssignedHost?: boolean;
 };
@@ -32,28 +33,14 @@ export default function InstanceList(props: InstanceListProps) {
 		return hosts.get(hostId)?.name ?? String(hostId);
 	}
 
-	function instancePublicAddress(instance: InstanceDetails) {
-		if (instance.assignedHost === undefined) {
-			return "";
-		}
-		let host = hosts.get(instance.assignedHost);
-		if (!host || !host.publicAddress) {
-			return "";
-		}
-		if (instance.gamePort === undefined) {
-			return host.publicAddress;
-		}
-		return `${host.publicAddress}:${instance.gamePort}`;
-	}
-
-	function integerFactorioVersionOrDefault(instance: InstanceDetails) {
+	function integerFactorioVersionOrDefault(instance: lib.InstanceDetails) {
 		if (instance.factorioVersion === undefined) {
 			return -1;
 		}
-		return integerFactorioVersion(instance.factorioVersion);
+		return lib.integerFactorioVersion(instance.factorioVersion);
 	}
 
-	let columns: ColumnsType<InstanceDetails> = [
+	let columns: ColumnsType<lib.InstanceDetails> = [
 		{
 			title: "Name",
 			dataIndex: "name",
@@ -76,7 +63,7 @@ export default function InstanceList(props: InstanceListProps) {
 			title: "Public address",
 			key: "publicAddress",
 			render: (_, instance) => {
-				let publicAddress = instancePublicAddress(instance);
+				let publicAddress = instancePublicAddress(instance, hosts.get(instance.assignedHost!) ?? null);
 				return publicAddress ? <>
 					{publicAddress}
 					<Button
@@ -90,7 +77,10 @@ export default function InstanceList(props: InstanceListProps) {
 					/>
 				</> : "";
 			},
-			sorter: (a, b) => strcmp(instancePublicAddress(a), instancePublicAddress(b)),
+			sorter: (a, b) => strcmp(
+				instancePublicAddress(a, hosts.get(a.assignedHost!) ?? null),
+				instancePublicAddress(b, hosts.get(b.assignedHost!) ?? null)
+			),
 			responsive: ["lg"],
 		},
 		{
diff --git a/packages/web_ui/src/components/InstanceViewPage.tsx b/packages/web_ui/src/components/InstanceViewPage.tsx
index 90c08037..a7ada36c 100644
--- a/packages/web_ui/src/components/InstanceViewPage.tsx
+++ b/packages/web_ui/src/components/InstanceViewPage.tsx
@@ -23,6 +23,7 @@ import { useInstance } from "../model/instance";
 import { useHost } from "../model/host";
 import InstanceStatusTag from "./InstanceStatusTag";
 import Link from "./Link";
+import { instancePublicAddress } from "../util/instance";
 
 type MenuItem = Required<MenuProps>["items"][number];
 const { Title } = Typography;
@@ -73,6 +74,7 @@ function InstanceButtons(props: { instance: lib.InstanceDetails }) {
 	let [exportingData, setExportingData] = useState(false);
 	let instance = props.instance;
 	let instanceId = instance.id!;
+	let [host] = useHost(instance.assignedHost);
 
 	let instanceButtonMenuItems: MenuItem[] = [];
 	if (account.hasPermission("core.instance.export_data")) {
@@ -156,6 +158,17 @@ function InstanceButtons(props: { instance: lib.InstanceDetails }) {
 			account.hasAnyPermission("core.instance.start", "core.instance.stop")
 			&& <StartStopInstanceButton instance={instance} />
 		}
+		<Button
+			onClick={() => {
+				const address = instancePublicAddress(instance, host);
+				if (address) {
+					window.location.href = `steam://run/427520//--mp-connect=${address}`;
+				}
+			}}
+			disabled={instance.status !== "running" || !instancePublicAddress(instance, host)}
+		>
+			Connect via Steam
+		</Button>
 		{account.hasPermission("core.instance.load_scenario") && <LoadScenarioModal instance={instance} />}
 		{account.hasAnyPermission(
 			"core.instance.export_data",
diff --git a/packages/web_ui/src/util/instance.ts b/packages/web_ui/src/util/instance.ts
new file mode 100644
index 00000000..b7f1f411
--- /dev/null
+++ b/packages/web_ui/src/util/instance.ts
@@ -0,0 +1,11 @@
+import * as lib from "@clusterio/lib";
+
+export function instancePublicAddress(instance: lib.InstanceDetails, host?: lib.HostDetails | null) {
+	if (instance.assignedHost === undefined || !host || !host.publicAddress) {
+		return "";
+	}
+	if (instance.gamePort === undefined) {
+		return host.publicAddress;
+	}
+	return `${host.publicAddress}:${instance.gamePort}`;
+}