diff --git a/instance.ts b/instance.ts
index cac7593..459022a 100644
--- a/instance.ts
+++ b/instance.ts
@@ -6,6 +6,26 @@ interface ChatMessage {
 	message: string;
 }
 
+function datetime(): string {
+    const now = new Date();
+    const p = (n: number) => String(n).padStart(2, '0');
+    return `${now.getFullYear()}${p(now.getMonth() + 1)}${p(now.getDate())} ${p(now.getHours())}${p(now.getMinutes())}${p(now.getSeconds())}`;
+}
+
+// Message body only. `.+?` (not `\S+`) so a manual save named 'my map' still parses.
+const SAVE_LINE_RE = /Saving to (.+?) \((?:non-)?blocking\)\./;
+
+// Factorio's autosaves are literally named '_autosave1'..'_autosaveN'.
+const AUTOSAVE_NAME_RE = /^_autosave(\d+)$/;
+
+function parse_save(line: string): {name: string, slot?: number} | null {
+    const m = SAVE_LINE_RE.exec(line);
+    if (!m) return null;
+
+    const slot = AUTOSAVE_NAME_RE.exec(m[1]);
+    return {name: m[1], slot: slot ? Number(slot[1]) : undefined};
+}
+
 export default async function(context: InstancePluginContext) {
     const {instance, host, plugin, logger} = context;
     const queue: ChatMessage[] = [];
@@ -38,32 +58,38 @@ export default async function(context: InstancePluginContext) {
     });
 
     instance.hooks.output.attach(plugin.name, async (output) => {
-        if (output.type !== 'action') {
-            return;
+        if (output.type === 'action') {
+            const dt = datetime();
+            const action = output.action;
+            let message = output.message.trim();
+
+            if (action === 'CHAT' || action === 'SHOUT') {
+                message = message.replace(/\[special-item=.*?\]/g, '<blueprint>').replace(/<@/g, '<@\u200c>');
+                const message_index = message.indexOf(':');
+                const message_username = message_index === -1 ? message : message.slice(0, message_index);
+                const message_content = message_index === -1 ? '' : message.slice(message_index + 1).trim();
+
+                queue.push({datetime: dt, message: `**\`${message_username}\`**: ${message_content}`});
+            } else if (action === 'JOIN' || action === 'LEAVE' || action === 'KICK' || action === 'BAN' || action === 'UNBANNED') {
+                const message_index = message.indexOf(' ');
+                const message_username = message_index === -1 ? message : message.slice(0, message_index);
+                const message_content = message_index === -1 ? '' : message.slice(message_index + 1).trim();
+                const player_count = instance.playersOnline.size + (action === 'JOIN' ? 0 : -1);
+
+                queue.push({datetime: dt, message: `**\`${message_username}\`** ${message_content} (${player_count})`});
+            }
+
+            await flush();
+        } else if (output.type === 'info') {
+            let message = output.message.trim();
+            const save_slot = parse_save(message);
+
+            if (!save_slot) {
+                return;
+            }
+
+            const dt = datetime();
+            queue.push({datetime: dt, message: `**AUTO SAVE SLOT ${save_slot}**`});
         }
-
-        const now = new Date();
-        const p = (n: number) => String(n).padStart(2, '0');
-        const dt = `${now.getFullYear()}${p(now.getMonth() + 1)}${p(now.getDate())} ${p(now.getHours())}${p(now.getMinutes())}${p(now.getSeconds())}`;
-        const action = output.action;
-        let message = output.message.trim();
-
-        if (action === 'CHAT' || action === 'SHOUT') {
-            message = message.replace(/\[special-item=.*?\]/g, '<blueprint>').replace(/<@/g, '<@\u200c>');
-            const message_index = message.indexOf(':');
-            const message_username = message_index === -1 ? message : message.slice(0, message_index);
-            const message_content = message_index === -1 ? '' : message.slice(message_index + 1).trim();
-
-            queue.push({datetime: dt, message: `**\`${message_username}\`**: ${message_content}`});
-        } else {
-            const message_index = message.indexOf(' ');
-            const message_username = message_index === -1 ? message : message.slice(0, message_index);
-            const message_content = message_index === -1 ? '' : message.slice(message_index + 1).trim();
-            const player_count = instance.playersOnline.size + (action === 'JOIN' ? 0 : -1);
-
-            queue.push({datetime: dt, message: `**\`${message_username}\`** ${message_content} (${player_count})`});
-        }
-
-        await flush();
     });
 }