Arcade machines come in various sizes and form factors, catering to different gaming experiences and space requirements. The most common cabinet sizes include:

1. Upright Cabinets: Typically 60-75 inches tall, 24-30 inches wide, and 30-36 inches deep. These are the classic arcade machines seen in arcades.

2. Cocktail Cabinets: Compact and table-style, usually 30-40 inches wide, 20-30 inches deep, and 30-40 inches tall, designed for two-player face-to-face gaming.

3. Candy Cabinets: Popular in Japan, these are slimmer (20-25 inches wide) and often modular for easy game swapping.

4. Mini/Bar-top Cabinets: Smaller versions (20-30 inches tall) designed for countertop use, often 24-30 inches wide.

5. Deluxe/Racing Cabinets: Larger (up to 80 inches tall) for immersive experiences like racing or flight simulators.

Standard form factors include the classic rectangular shape for uprights, rounded designs for cocktails, and sleek, modular builds for candy cabs. Consider space, game type, and authenticity when choosing a cabinet size.