Arcadia is a fixed shooter published by Imagine Software for the ZX Spectrum and VIC-20 in 1983.

The player controls a space ship as the aliens scroll and move freely down the screen.

Advancing to the next level involves staying alive until the timer in the top left corner ticks from 99 to 0.

Early VIC-20 versions contain a bug causing aliens to stop appearing after the eighth level.

[5] Popular Computing Weekly were particularly impressed with the graphics, stating that they "have no equal in the Spectrum field," and "lift this game into a class of its own", rating it 86%.