Not a specific product but a category: the accumulated result of multiple cheap, poorly sequenced gene modifications from black-market clinics layered on top of each other without compatibility testing. Chimeric splice users display a patchwork of partially expressed traits — a patch of scales here, a tuft of fur there, one eye with a tapetum and one without, a partial tail that never finished growing, teeth that can't decide if they're fangs or molars. The black-market gene clinics of the Shelf use bulk gene stock purchased from corponation waste streams, expired retroviral batches, and outright counterfeits. The results are unpredictable. Some chimeric individuals develop functional modifications; most develop a cosmetic chaos of half-expressed traits. A few develop dangerous incompatibilities — organs that fight each other, immune systems that attack their own modifications, or runaway gene expression that doesn't stop. Chimeric splice is the geneware of the desperate — people who can't afford Tier 2+ installations but want modification badly enough to accept the risk.