Applied Technology Microbee disk. published 37 years ago by P&A Soft.

Not listed in MAME yet

Concentration © 1986 P&A Soft.

Concentration, a memory and pattern recognition game, consists of 50 numbered cards being presented to both players. Each player then takes turns in selecting two cards to view their flip-side (a small picture). These are displayed for a few seconds then the other player chooses two. The object is to remember, and select, as many pairs of cards as possible.