Vectorball

The 'flippy' edition of this game had the Spectrum version on one side, and the Amstrad CPC version on the other side. This is nothing unusual in itself as dozens of games used the cost-effective system, but on this one the Amstrad spec is written under a yellow strip, and the Spectrum details on an orange strip directly below it. This (presumably accidentally) contradicts a UK industry convention for budget cassette games of using yellow for Spectrum, orange for Amstrad, red for C64 and so on (ironically, a convention pioneered by Mastertronic themselves when they launched in 1984).