Porting classic arcade games to modern hardware presents several unique challenges for developers. One major issue is hardware compatibility, as older arcade systems relied on specialized chips and architectures that differ significantly from today's PCs and consoles. Emulating these systems accurately requires extensive reverse-engineering and optimization.

Another challenge is preserving the original gameplay experience while adapting controls for modern input devices. Arcade games were designed for specific joysticks and buttons, and translating this to keyboards, controllers, or touchscreens can alter the feel of the game.

Legal hurdles also arise, as licensing rights for classic games are often complex or unclear. Developers must navigate copyright issues and secure permissions from multiple parties.

Additionally, modern displays with different aspect ratios and resolutions can distort pixel-perfect arcade graphics. Developers must choose between preserving the original look or enhancing visuals for HD screens.

Finally, there's the challenge of maintaining the difficulty balance - many classic arcade games were intentionally brutal to maximize coin revenue, which may frustrate modern players expecting more accessible experiences.

Despite these challenges, successful ports can introduce classic games to new audiences while preserving gaming history for future generations.