tool/disk_save already indexes every call by entry, so multiple save files cost almost nothing on the storage side — KISSAT00.SAV, KISSAT01.SAV, and DiskSave_Check/Delete/GetFreeEntries already exist per entry. The work is the boot-time slot screen, which is why it sits late: it is easier to design once there is real save content to display. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>