diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..be59a3f
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+cd ..
+zip pokemon-foundry/system.zip -r pokemon-foundry/
\ No newline at end of file
diff --git a/modules/sheets/PokemonItemSheet.js b/modules/sheets/PokemonItemSheet.js
new file mode 100644
index 0000000..4b402d1
--- /dev/null
+++ b/modules/sheets/PokemonItemSheet.js
@@ -0,0 +1,5 @@
+export default class PokemonItemSheet extends ItemSheet {
+    get template() {
+        return `systems/pokemon/templates/sheets/${this.item.data.type}-sheet.html`
+    }
+}
\ No newline at end of file
diff --git a/pokemon.js b/pokemon.js
new file mode 100644
index 0000000..d8f2a0b
--- /dev/null
+++ b/pokemon.js
@@ -0,0 +1,8 @@
+import PokemonItemSheet from "./modules/sheets/PokemonItemSheet";
+
+Hooks.once("init", function() {
+    console.log("pokemon | Initializing the Pokémon system");
+
+    Items.unregisterSheet("core", ItemSheet);
+    Items.registerSheet("pokemon", PokemonItemSheet, { makeDefault: true });
+});
\ No newline at end of file
diff --git a/system.json b/system.json
index 19b9efd..c4ad923 100644
--- a/system.json
+++ b/system.json
@@ -1,8 +1,12 @@
 {
-    "version": "0.0.3",
+    "version": "0.0.4",
     "id": "pokemon",
     "title": "Pokémon TTRPG",
     "description": "A Pokémon TTRPG",
+    "compatibility": {
+        "minimum": 13,
+        "verified": "13.344"
+    },
     "authors": [
         {
             "name":"Alex Richter"
@@ -12,13 +16,14 @@
         }
     ],
     "scripts": [],
-    "esmodules": [],
+    "esmodules": [
+        "pokemon.js"
+    ],
     "styles": [],
     "packs": [],
-    "dependencies": [],
     "languages": [],
     "socket": false,
     "url": "https://git.ingemanngade.net/NikolajDanger/pokemon-foundry/raw/branch/main/",
     "manifest": "https://git.ingemanngade.net/NikolajDanger/pokemon-foundry/raw/branch/main/system.json",
-    "download": "https://git.ingemanngade.net/NikolajDanger/pokemon-foundry/archive/0.0.3.zip"
+    "download": "https://git.ingemanngade.net/NikolajDanger/pokemon-foundry/raw/branch/main/system.zip"
 }
\ No newline at end of file
diff --git a/system.zip b/system.zip
new file mode 100644
index 0000000..e80f9f0
Binary files /dev/null and b/system.zip differ
diff --git a/template.json b/template.json
index 9e26dfe..0005648 100644
--- a/template.json
+++ b/template.json
@@ -1 +1,16 @@
-{}
\ No newline at end of file
+{
+  "Actor": {},
+  "Item": {
+    "types": ["item"],
+    "templates": {
+      "base": {
+        "description": ""
+      }
+    },
+    "item": {
+      "templates": ["base"],
+      "quantity": 1,
+      "weight": 0
+    }
+  }
+}
\ No newline at end of file
diff --git a/templates/sheets/item-sheet.html b/templates/sheets/item-sheet.html
new file mode 100644
index 0000000..090a776
--- /dev/null
+++ b/templates/sheets/item-sheet.html
@@ -0,0 +1,7 @@
+<form class="{{cssClass}}" autocomplete="off">
+    <header class="sheet-header">
+        <img src="{{item.img}}" data-edit="img" title="{{item.name}}" height="64" width="64"/>
+        <h1><input name="name" type="text" value="{{item.name}}" placeholder="Name"/></h1>
+    </header>
+    <p>HELLO TEST</p>
+</form>
\ No newline at end of file