You will need an unzipping app. We recommend ZArchiver (free on the Play Store).
When searching for a zip file download of Frontline Commando D-Day, it's crucial to consider a few important points: Frontline Commando D-day Zip File Download
When a game is no longer on the Play Store, the only way to install it is via sideloading. Many websites compress the game's installation files into a .zip archive for two reasons: You will need an unzipping app
A typical "Frontline Commando D-day Zip File" contains: A typical "Frontline Commando D-day Zip File" contains: