diff --git a/src/system.clj b/src/system.clj
new file mode 100644
index 0000000..4556c72
--- /dev/null
+++ b/src/system.clj
@@ -0,0 +1,34 @@
+;; SPDX-License-Identifier: Apache-2.0
+;; SPDX-FileCopyrightText: 2022 Sebastian Crane <seabass-labrax@gmx.com>
+
+(ns system
+  (:require [clojure.data.json :as json]
+            [clj-yaml.core :as yaml]))
+
+(defn json-data-reader [key value]
+  (if (= key :games)
+    (into (empty value)
+          (map #(hash-map (first %)
+                          (set (second %)))
+               value))
+    value))
+
+(defn load-state [f]
+  (try
+    (with-open [datafile (clojure.java.io/reader f)]
+      (json/read datafile
+                 :value-fn json-data-reader
+                 :key-fn keyword))
+    (catch Exception e nil)))
+
+(defn save-state [f data]
+  (try
+    (with-open [datafile (clojure.java.io/writer f)]
+      (json/write data datafile))
+    (catch Exception e nil)))
+
+(defn load-config [f]
+  (try
+    (with-open [datafile (clojure.java.io/reader f)]
+      (yaml/parse-stream datafile))
+    (catch Exception e nil)))