Your Security Settings Have Blocked An Application -

When you see (or a similar phrasing), it means macOS Gatekeeper or your privacy settings have prevented an app from running because:

Elias reached for the power button on his PC, but his hand stopped mid-air. On the screen, the program finally loaded. It wasn't a map of an old ruin. It was a live, 3D wireframe of his own apartment building. In the center of his living room, a small, blinking red dot represented him. But there was another dot. your security settings have blocked an application

Open and run:

“Access granted,” a synthetic voice whispered through his speakers. It wasn't the voice of his OS. When you see (or a similar phrasing), it