Starships riding fire across the sky. Heroes and villains exchanging laser fire. Desperate spacers struggling against an alien monstrosity. Vast planetary vistas, flying cities, moonscapes, mad robots, and first encounters. In short: high-action science-fiction adventure that stimulates your sense of wonder. Cepheus Deluxe puts you in the shoes of an adventurer visiting distant stars and encountering the unknown. Whether you are a seasoned player looking for a rules-light game, or a new gamer wanting to experience what science-fiction role-playing games are all about, Cepheus Deluxe opens your way forward. Cepheus Deluxe is a set of rules for playing classic science fiction games. It includes rules on creating characters, resolving actions, fighting other creatures, and engaging in space battles, generating worlds, handling the risks of interstellar speculative trading, exploring new worlds, and many other activities. While rules-light and designed for fast, action-packed play rather than an accurate simulation of reality, Cepheus Deluxe encompasses a wide variety of rules and materials for building a science-fiction universe and playing in it. Cepheus Deluxe draws its inspiration from old-school science-fiction roleplaying games. It shares many similarities with these games. Material from older rules sets and those created with Cepheus Deluxe, the old Cepheus Light, the Cepheus Engine Core, and old-school sci-fi roleplaying games, are easily compatible with only a moderate amount of adjustment. The future awaits! Compatible with the Cepheus Engine System Reference Document and other OGL 2D6 Sci Fi games.