diff --git a/Dockerfile b/Dockerfile
index 4aa43c8..1ef665d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -52,9 +52,9 @@ EXPOSE 5900
 EXPOSE 6080
 
 # Configure Xvfb via environment variables:
-ENV SCREEN_WIDTH 1280
-ENV SCREEN_HEIGHT 1280
-ENV SCREEN_DEPTH 24
+ENV WIDTH 1280
+ENV HEIGHT 1280
+ENV DEPTH 24
 
 # Show browser instead of running headless
 ENV SHOW 1
diff --git a/README.md b/README.md
index e47f71b..f6e78f1 100644
--- a/README.md
+++ b/README.md
@@ -53,8 +53,8 @@ The available options/variables and their default values are:
 | Option        	| Default 	| Description                                                            	|
 |---------------	|---------	|------------------------------------------------------------------------	|
 | SHOW          	| 1       	| Show browser if 1. Default for Docker, not shown when running outside. 	|
-| SCREEN_WIDTH  	| 1280    	| Width of the opened browser (and screen vor VNC in Docker).            	|
-| SCREEN_HEIGHT 	| 1280    	| Height of the opened browser (and screen vor VNC in Docker).           	|
+| WIDTH         	| 1280    	| Width of the opened browser (and screen vor VNC in Docker).            	|
+| HEIGHT        	| 1280    	| Height of the opened browser (and screen vor VNC in Docker).           	|
 | VNC_PASSWORD  	|         	| VNC password for Docker. No password used by default!                  	|
 | EMAIL         	|         	| Default email for any login.                                           	|
 | PASSWORD      	|         	| Default password for any login.                                        	|
@@ -62,6 +62,8 @@ The available options/variables and their default values are:
 | EG_PASSWORD   	|         	| Epic Games password for login. Overrides PASSWORD.                     	|
 | PG_EMAIL      	|         	| Prime Gaming email for login. Overrides EMAIL.                         	|
 | PG_PASSWORD   	|         	| Prime Gaming password for login. Overrides PASSWORD.                   	|
+| GOG_EMAIL      	|         	| GOG email for login. Overrides EMAIL.                         	|
+| GOG_PASSWORD   	|         	| GOG password for login. Overrides PASSWORD.                   	|
 
 #### Other ways to set options
 On Linux/macOS you can prefix the variables you want to set, for example `EMAIL=foo@bar.baz SHOW=1 node epic-games` will show the browser and skip asking you for your login email.
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index 625bba3..0fa7de8 100755
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -19,8 +19,8 @@ rm -f /tmp/.X1-lock
 # −screen NUM WxHxD creates the screen and sets its width, height, and depth
 
 export DISPLAY=:1 # need to export this, otherwise playwright complains with 'Looks like you launched a headed browser without having a XServer running.'
-Xvfb $DISPLAY -ac -screen 0 "${SCREEN_WIDTH}x${SCREEN_HEIGHT}x${SCREEN_DEPTH}" &
-echo "Xvfb display server created screen with resolution ${SCREEN_WIDTH}x${SCREEN_HEIGHT}"
+Xvfb $DISPLAY -ac -screen 0 "${WIDTH}x${HEIGHT}x${DEPTH}" &
+echo "Xvfb display server created screen with resolution ${WIDTH}x${HEIGHT}"
 x11vnc -display $DISPLAY -forever -shared -rfbport $VNC_PORT -bg -nopw 2>/dev/null 1>&2 # -passwd "${VNC_PASSWORD}"
 echo "VNC is running on port $VNC_PORT (no password!)"
 websockify -D --web "/usr/share/novnc/" $NOVNC_PORT "localhost:$VNC_PORT" 2>/dev/null 1>&2 &
diff --git a/epic-games.js b/epic-games.js
index e2562fb..675bb89 100644
--- a/epic-games.js
+++ b/epic-games.js
@@ -15,8 +15,8 @@ const headless = !debug && !show;
 const URL_CLAIM = 'https://store.epicgames.com/en-US/free-games';
 const URL_LOGIN = 'https://www.epicgames.com/id/login?lang=en-US&noHostRedirect=true&redirectUrl=' + URL_CLAIM;
 const TIMEOUT = 20 * 1000; // 20s, default is 30s
-const SCREEN_WIDTH = Number(process.env.SCREEN_WIDTH) || 1280;
-const SCREEN_HEIGHT = Number(process.env.SCREEN_HEIGHT) || 1280;
+const WIDTH = Number(process.env.WIDTH) || 1280;
+const HEIGHT = Number(process.env.HEIGHT) || 1280;
 
 console.log(datetime(), 'started checking epic-games');
 
@@ -41,7 +41,7 @@ const context = await firefox.launchPersistentContext(dirs.browser, {
   // chrome will not work in linux arm64, only chromium
   // channel: 'chrome', // https://playwright.dev/docs/browsers#google-chrome--microsoft-edge
   headless,
-  viewport: { width: SCREEN_WIDTH, height: SCREEN_HEIGHT },
+  viewport: { width: WIDTH, height: HEIGHT },
   userAgent: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.83 Safari/537.36', // see replace of Headless in util.newStealthContext. TODO Windows UA enough to avoid 'device not supported'? update if browser is updated?
   // userAgent for firefox: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:106.0) Gecko/20100101 Firefox/106.0
   locale: "en-US", // ignore OS locale to be sure to have english text for locators
@@ -78,8 +78,8 @@ try {
     await page.goto(URL_LOGIN, { waitUntil: 'domcontentloaded' });
 
     console.info('Press ESC to skip if you want to login in the browser.');
-    const email = process.env.EMAIL || await prompt({message: 'Enter email'});
-    const password = process.env.PASSWORD || await prompt({type: 'password', message: 'Enter password'});
+    const email = process.env.EG_EMAIL || process.env.EMAIL || await prompt({message: 'Enter email'});
+    const password = process.env.EG_PASSWORD || process.env.PASSWORD || await prompt({type: 'password', message: 'Enter password'});
     if (email && password) {
       await page.click('text=Sign in with Epic Games');
       await page.fill('#email', email);
diff --git a/gog.js b/gog.js
index 4e05af7..75afc9c 100644
--- a/gog.js
+++ b/gog.js
@@ -12,9 +12,9 @@ const show = process.argv.includes('show', 2);
 const headless = !debug && !show;
 
 const URL_CLAIM = 'https://www.gog.com/en';
-const TIMEOUT = 0 * 1000; // 20s, default is 30s
-const SCREEN_WIDTH = Number(process.env.SCREEN_WIDTH) || 1280;
-const SCREEN_HEIGHT = Number(process.env.SCREEN_HEIGHT) || 1280;
+const TIMEOUT = 20 * 1000; // 20s, default is 30s
+const WIDTH = Number(process.env.WIDTH) || 1280;
+const HEIGHT = Number(process.env.HEIGHT) || 1280;
 
 console.log(datetime(), 'started checking gog');
 
@@ -24,7 +24,7 @@ db.data ||= {};
 // https://playwright.dev/docs/auth#multi-factor-authentication
 const context = await firefox.launchPersistentContext(dirs.browser, {
   headless,
-  viewport: { width: SCREEN_WIDTH, height: SCREEN_HEIGHT },
+  viewport: { width: WIDTH, height: HEIGHT },
   locale: "en-US", // ignore OS locale to be sure to have english text for locators -> done via /en in URL
 });
 
@@ -48,8 +48,8 @@ try {
     const iframe = page.frameLocator('#GalaxyAccountsFrameContainer iframe');
     if (!debug) context.setDefaultTimeout(0); // give user time to log in without timeout
     console.info('Press ESC to skip if you want to login in the browser (not possible in headless mode).');
-    const email = process.env.EMAIL || await prompt({message: 'Enter email'});
-    const password = process.env.PASSWORD || await prompt({type: 'password', message: 'Enter password'});
+    const email = process.env.GOG_EMAIL || process.env.EMAIL || await prompt({message: 'Enter email'});
+    const password = process.env.GOG_PASSWORD || process.env.PASSWORD || await prompt({type: 'password', message: 'Enter password'});
     if (email && password) {
       iframe.locator('a[href="/logout"]').click().catch(_ => { }); // Click 'Change account' (email from previous login is set in some cookie)
       await iframe.locator('#login_username').fill(email);
diff --git a/prime-gaming.js b/prime-gaming.js
index e77d7d1..26c2eaa 100644
--- a/prime-gaming.js
+++ b/prime-gaming.js
@@ -14,8 +14,8 @@ const headless = !debug && !show;
 // const URL_LOGIN = 'https://www.amazon.de/ap/signin'; // wrong. needs some session args to be valid?
 const URL_CLAIM = 'https://gaming.amazon.com/home';
 const TIMEOUT = 20 * 1000; // 20s, default is 30s
-const SCREEN_WIDTH = Number(process.env.SCREEN_WIDTH) || 1280;
-const SCREEN_HEIGHT = Number(process.env.SCREEN_HEIGHT) || 1280;
+const WIDTH = Number(process.env.WIDTH) || 1280;
+const HEIGHT = Number(process.env.HEIGHT) || 1280;
 
 console.log(datetime(), 'started checking prime-gaming');
 
@@ -34,7 +34,7 @@ const migrateDb = (user) => {
 // https://playwright.dev/docs/auth#multi-factor-authentication
 const context = await firefox.launchPersistentContext(dirs.browser, {
   headless,
-  viewport: { width: SCREEN_WIDTH, height: SCREEN_HEIGHT },
+  viewport: { width: WIDTH, height: HEIGHT },
   locale: "en-US", // ignore OS locale to be sure to have english text for locators
 });
 
@@ -56,8 +56,8 @@ try {
     await page.click('button:has-text("Sign in")');
     if (!debug) context.setDefaultTimeout(0); // give user time to log in without timeout
     console.info('Press ESC to skip if you want to login in the browser (not possible in default headless mode).');
-    const email = process.env.EMAIL || await prompt({message: 'Enter email'});
-    const password = process.env.PASSWORD || await prompt({type: 'password', message: 'Enter password'});
+    const email = process.env.PG_EMAIL || process.env.EMAIL || await prompt({message: 'Enter email'});
+    const password = process.env.PG_PASSWORD || process.env.PASSWORD || await prompt({type: 'password', message: 'Enter password'});
     if (email && password) {
       await page.fill('[name=email]', email);
       await page.fill('[name=password]', password);