--- a/src/constants.py
+++ b/src/constants.py
@@ -5,7 +5,7 @@
 HEIGHT = 120
 MID_W = WIDTH / 2
 MID_H = HEIGHT / 2
-SCORE_FILE = "lastspacefighter_scores.dat"
+SCORE_FILE = "lastspacefighter_scores.json"
 
 
 # colors
--- a/src/shooter.py
+++ b/src/shooter.py
@@ -14,9 +14,9 @@
 
 class App:
     def __init__(self):
-        px.init(WIDTH, HEIGHT, title="The last space fighter", capture_sec=0)
+        px.init(WIDTH, HEIGHT, title="The last space fighter", capture_sec=0,
+                quit_key=px.KEY_NONE)
         px.load(path_join("assets", "shooter.pyxres"))
-        px.fullscreen(True)
 
         self.pt = time()  # Buffer previous time
         self.game = Game()
@@ -27,8 +27,6 @@
 
     def update(self):
 
-        if px.btnp(px.KEY_Q):
-            px.quit()
         if px.btnp(px.KEY_P):
             if not self.paused:
                 px.stop()
--- a/src/scores.py
+++ b/src/scores.py
@@ -1,7 +1,7 @@
-from os.path import join as path_join
+from os.path import isdir, join as path_join
 from os import environ, makedirs
 
-import shelve
+import json
 
 import pyxel as px
 from constants import WHITE, BROWN, PURPLE, RED, PINK, SCORE_FILE
@@ -22,24 +22,28 @@
 
     @classmethod
     def init(cls):
-        config_path = path_join(
-            environ.get("APPDATA")  # Windows
-            or environ.get("XDG_CONFIG_HOME")  # Linux/macos XDG spec.
-            or path_join(environ.get("HOME"), ".config"),  # fallback
-            "lastspacefighter",
-        )
+        # FredyGames: the browser build keeps the scores in /saves/the-last-space-fighter (IndexedDB, kept by the page)
+        config_path = "/saves/the-last-space-fighter"
+        if not isdir(config_path):
+            config_path = path_join(
+                environ.get("APPDATA")  # Windows
+                or environ.get("XDG_CONFIG_HOME")  # Linux/macos XDG spec.
+                or path_join(environ.get("HOME"), ".config"),  # fallback
+                "lastspacefighter",
+            )
         makedirs(config_path, exist_ok=True)
         cls.scores_file = path_join(config_path, SCORE_FILE)
         cls.hiscores = cls.load()
 
     @classmethod
     def load(cls):
-        with shelve.open(cls.scores_file) as s:
-            try:
-                return s["hiscores"]
-            except KeyError:
-                # Default high-scores
-                return [1000, 2000, 3000, 4000, 5000]
+        # FredyGames: a JSON file instead of shelve (Pyodide has no dbm module)
+        try:
+            with open(cls.scores_file, encoding="utf-8") as f:
+                return [int(s) for s in json.load(f)["hiscores"]]
+        except (OSError, ValueError, KeyError, TypeError):
+            # Default high-scores
+            return [1000, 2000, 3000, 4000, 5000]
 
     @classmethod
     def pr(cls):
@@ -49,8 +53,8 @@
 
     @classmethod
     def save(cls):
-        with shelve.open(cls.scores_file) as s:
-            s["hiscores"] = cls.hiscores
+        with open(cls.scores_file, "w", encoding="utf-8") as f:
+            json.dump({"hiscores": cls.hiscores}, f)
 
     @classmethod
     def update(cls, score):