Two games for the price of one Backgammon is a fairly ordinary version with unstartling graphics, no sound, no skill levels and an average playing strength. 3D OXO has four skill levels, a 4 x 4 x 4 playing grid, unimpressive graphics and rudimentary sound.
Both programs had good on-screen instructions and seemed much of the same standard - good for practising basic playing-skills, but not representing much of a challenge to the dedicated player. As probably the only versions for the Oric, they're worth buying if you can't wait any longer.