Install OSB and paint flat black. No mud, no tape, and you can drop a panel if you have to get at anything by the joists...wires, plumbing, etc. Lighting could be external, plugged into electrical outlets on switches. Put insulation between the joists for sound proofing. (My pins are upstairs...play them more that way).

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I like my dark painted basement. The use of accent lighting and color in the art really pops. I wanted a totally different space than my upstairs...which is mainly floor to ceiling windows. Playing a pinball/arcade in a darker environment reduces glare as well. As far as it showing dirt...nope...but the idea was to create a barcade atmosphere. I’ve never been in a light painted barcade.

If you paint the joists, you’ll need a sprayer. If you’re painting drywall/osb, a roller. Yes, you will have to cover everything. Plastic painting sheets are cheap. You’d be amazed how much paint spatter there will be. Wear old clothes, and strongly think about eye protection. A baseball hat is a good idea too.

Not sure what sprayer...you local rental (lumbar) store can help you with this, and what they have.