A numbered title refers to a title that is given a specific number rather than a descriptive or unique name. It is a way to identify or categorize something with a simple numerical label. Full definition
I can pick out a nice number titles that appeal to me from that launch lineup, some of which I own and others I'd be interested in trying. (poisonmushroom.org)
Perhaps that's the reason behind the binary number titles? (geekreply.com)
Although a majority of the included games are relatively old, the sheer number titles mean there's potentially huge value behind this package. (windowscentral.com)