Play Sentinel Online

Summary

Sentinel stands out as the sole light‑gun title ever released for the Atari 2600, a quirky experiment by Imagineering’s David Lubar that relied on the XE light gun accessory. The concept was simple enough to fit the 2600’s modest hardware, but the novelty of aiming at a hovering Sentinel orb gave it a distinct retro charm.

When the game resurfaced on the Atari 7800 in 1991, it received a visual polish that made the four planetary stages feel a bit more vivid, though the upgrade was limited to Europe, making it the final official European release for the 7800. This version kept the same core mechanics while offering a slightly smoother experience for fans who still owned the newer console.

Gameplay mirrors the arcade classic Crossbow: you protect the Sentinel orb by shooting incoming enemies, using smart bombs triggered by the orb itself, and even taking down hostile missiles. Four planets increase the challenge, and three difficulty settings let you dial the tension up or down.

Critics were merciless; both the original and the 7800 remake earned “F” grades, with reviewers calling the graphics uninspired and the action long‑winded. Even retro historians label it more of a novelty than a lasting title, noting that its only real competitor, Shooting Arcade, never saw the light of day.

Storyline

The game Sentinel puts you in the role of a scientist who has built a glowing orb called the Sentinel, capable of absorbing and storing energy. When an alien force invades Earth, you launch the Sentinel into space to stop them. The journey takes you to four hostile worlds—Alptaurus, Ceruptus, Vulnavium, and Asceptron—each defended by an alien lord and a power station. By destroying each station you cripple the invasion. After the four planets fall, the Sentinel confronts the mastermind behind the alien lords and defeats it, ending the threat.