Extra Mame Registration Key Top «Updated ★»

One night, a new player arrived with a device he called a top: a circular, handcrafted controller polished to a mirror sheen. He set it on the cabinet and called out, “I built this from an old turntable motor. I thought—what if you could spin not just levels but perspectives?” He slid the brass key into the seam, turning it twice. The cabinet responded with a mode none in the group had seen: Empty Hall.

There is no technical mechanism for “extra” MAME features beyond what’s already in the public builds.