From publisher blurb:
In the bustling corridors of a starport, secrets are currency, and trust is a rare commodity. When an assistant starport administrator approaches the heroes with a desperate plea, they find themselves plunged into a web of deceit and danger. Someone has stolen sensitive files from the starport’s computers, and the admin is willing to pay handsomely to recover them while keeping his superiors in the dark. But as the adventurers dig deeper, they uncover a sinister plot involving a powerful crime syndicate, a rogue hacker, and a trail of corruption that could bring the entire starport to its knees. Every move the PCs make risks triggering a deadly response from dangerous criminals who will stop at nothing to protect their empire.
Penumbra is a short science fiction adventure using RPGs using 2D6 and rules such as Cepheus Engine and the Original Science Fiction Roleplaying Game. Other systems are easily adapted.