I don't have a game room but my experience at the two pinball museums is avoid ceiling lighting completely. If it's not an option, then I would make lightweight baffles that are around 50% larger (in the case of fluorescents) and hang them with fishing line or a light chain. You really don't want any direct light on the glass. You can decorate the baffles with pin posters or whatever, so they don't have to be "ugly" necessarily.

Also, dark walls and ceiling are best. If you are also planning a home theater setup in the same room it's also ideal for that as well.

lightblocker.png