Arcade machines have traditionally been closed systems designed for commercial reliability, but various methods exist for incorporating player-created levels and mods. Historically, most classic arcade cabinets used proprietary hardware and ROMs that were difficult to modify without technical expertise. However, some modern arcade systems and re-releases have begun implementing official level editors and mod support.

The primary approaches include hardware modification through JAMMA board replacements, software hacking of game ROMs, and the use of external devices like the Pandora's Box multi-game system. Modern arcade platforms such as those running on PC-based hardware often support mods similarly to home computers, allowing for custom levels and gameplay modifications.

The arcade modding community has developed techniques for creating custom content, though this often voids warranties and may violate copyright laws. Some arcade manufacturers have embraced this trend by releasing official development tools, while others maintain strictly closed systems to prevent unauthorized modifications that could affect gameplay balance or revenue generation in commercial settings.