Seaquest

Seaquest was published by Activision in 1983 and programmed by Steve Cartwright — a credit worth stating, because Atari 2600 games were typically one person's work from first line to last, graphics and sound included, and Activision was unusual in printing that person's name on the box.

The rules explain themselves in seconds. You pilot a submarine, collect divers, shoot what swims at you, and watch an oxygen meter. That meter is what separates Seaquest from an ordinary shooter: it forces you to abandon a good position and surface exactly when staying down feels most productive.

The whole game rests on that single tension. Surfacing without divers wastes the trip; surfacing with a full load means crossing the entire screen while everything below is still hunting you. The result is constant arithmetic between score and survival, expressed by the 2600 through nothing more than a bar along the bottom edge.

1983 was the year the American games business collapsed, and Activision was one of few companies to come through with its reputation intact. Seaquest is representative of that house style — plain rules, an increasing tempo, no ending, and a score as the only measure of how it went.

The technical side deserves a mention too. The Atari 2600 had no frame buffer, so the program built the picture line by line in step with the electron beam, and every moving object competed for a very small number of sprites. The traffic on screen is a programming achievement rather than a given.

Here on OldGame.cz the game starts straight in your browser, so the oxygen trap is something you can test for yourself rather than read about.