diff --git a/.gitignore b/.gitignore
index 662466db..ad37f98b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,7 @@ LEGO1PROGRESS.*
 ISLEPROGRESS.*
 *.pyc
 tools/ghidra_scripts/import.log
+.flatpak-builder/
 
 # By convention we put the retail binaries into ./legobin.
 # These entries are kept for now since that convention has not always been around.
diff --git a/pizza.isle.IslePortable.json b/pizza.isle.IslePortable.json
new file mode 100644
index 00000000..d105e8ad
--- /dev/null
+++ b/pizza.isle.IslePortable.json
@@ -0,0 +1,41 @@
+{
+    "id": "pizza.isle.IslePortable",
+
+    "runtime": "org.kde.Platform",
+    "sdk": "org.kde.Sdk",
+    "runtime-version": "6.9",
+
+    "command": "isle",
+
+    "finish-args": [
+        "--share=ipc",
+        "--socket=wayland",
+        "--socket=fallback-x11",
+        "--socket=pulseaudio",
+        "--device=dri",
+        "--device=input"
+    ],
+
+    "modules": [
+        {
+            "name": "isle",
+            "buildsystem": "cmake-ninja",
+            "config-opts": [
+                "-DCMAKE_BUILD_TYPE=RelWithDebInfo",
+                "-DISLE_DEBUG=OFF"
+            ],
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://github.com/isledecomp/isle-portable.git",
+                    "branch": "master"
+                }
+            ],
+            "build-options": {
+                "build-args": [
+                    "--share=network"
+                ]
+            }
+        }
+    ]
+}