Hey there! I'm sorry to hear that you're having trouble with the Megapolis app not opening. Let's try to sort this out together. I see you've already cleared the cache, which is a great first step. Here are a few more suggestions you can try:

1. Reboot Your Device: Sometimes, simply restarting your phone can resolve such issues. Turning it off and on again can clear out any temporary glitches impacting the app performance1.

2. Update the Game: Ensure that you have the latest version of the Megapolis app. Visit the Google Play Store, search for Megapolis, and see if an update is available.

3. Free Up Memory: Make sure your device has enough free space. You can check and clear unused apps or files to free up space.

4. Internet Connection: Sometimes, the app may not open due to connectivity issues. Verify that you're connected to the internet and try switching between Wi-Fi and mobile data to see if it makes a difference.

5. App Reinstallation: If none of the above steps work, you may want to consider uninstalling and then reinstalling the app. This can sometimes fix corrupted files within the app.

Give these steps a try, and let me know how it goes! Are you satisfied with the solution I provided, or do you need further assistance?