Crystal Quest

Crystal Quest started life in the mid-1980s on the Macintosh, where it became something of a showcase title because it was built around the mouse at a time when most games still assumed a joystick or keyboard. A PC version followed, and the design carried over unchanged, because the design is remarkably simple.

You pilot a small craft inside a closed arena, viewed from above and visible in its entirety. Each wave asks you to collect every crystal on screen and then escape through an exit. Enemies swarm in, growing in number and variety as you progress, with different behaviours - some chase, some fire, some simply obstruct. You can shoot back, but movement is the real weapon: threading the ship cleanly through gaps at speed. The mouse suits this better than a digital stick because it responds instantly and without discrete steps.

Two things gave the game its reputation. First, it is a pure arcade loop with no story attached, the kind you can drop into for five minutes. Second, it had unusually prominent audio for its day, including digitised voice clips, which sounded startling coming out of an office computer and stuck in people's memory long afterwards.

It has aged well precisely because it never depended on technology. The rules take ten seconds to explain, difficulty climbs steadily, and every death is clearly your own mistake rather than the system's. If you want a short game that tests hand and spatial awareness, this is one of the survivors. If you want progression, upgrades or content to explore, it offers none of that - only a score and the slow evidence of your own improvement.