TBG’s Universal-Toppers were the first in a continued line of developments.

Mk1 and Mk2 Toppers had introduced the CCFL technology to the gaming markets. An efficient and bright illumination technology developed by TBG.

Mk3 Toppers moved away from the CCFL technology, introduce the use of ELP backlighting. The diffused lighting on the door/bezel.
With help of the thinner ELP lighting, the MK3 also comes in a double-sided option.

Later versions of the MK2 using ELPs in place of Type 4 CCFLs, allowed TBG to create MK2 toppers of different sizes and shapes.