About Cyberball: Football in the 21st Century

Interestingly this seems to be a Spectrum 128 only game. Interesting because I got the game on a compilation ("The Tengen Trilogy") and the cassette label says "SPEC 48/128k CASS". But loading the game on a 48k machine quits with a "number too big message" after the loading screen. So it really seems to be runnable with 128k only.