Arcadia's version of Centipede, with a fierce spider and Pac Man style character thrown in, is absorbing entertainment for one or two players.
Use of the Oric's sound and colour capabilities was excellent, and a record of high scores (60.879 was the best achieved) can be kept.
Points are scored for shooting down the spider and the mushrooms, which are constantly being replaced to try and hinder manoeuverability of your fire power. There are nine skill levels, from fairly easy to almost impossible.
Basically simple, Mushroom Mania is addictive enough to prevent eventual boredom, and is good value for money too.