While modern arcade game machines boast high-definition graphics and complex gameplay, a surprising number of classic retro games maintain a permanent and beloved spot on their menus. These timeless titles represent the golden age of arcades and continue to attract players of all ages. So, what are the most popular retro games still featured in modern arcade game machines?

The undisputed king remains Pac-Man. This iconic maze-chase game, with its simple yet addictive gameplay, is a staple in almost any multicade cabinet. Its universal appeal ensures it's instantly recognizable and fun for everyone.

Following closely is the fighting game legend, Street Fighter II: The World Warrior. This title revolutionized the genre and its competitive spirit is perfectly suited for the arcade environment. Modern arcades often feature it in dedicated cabinets or as part of fighting game collections.

No list would be complete without Space Invaders. As one of the earliest shooters, its pixelated aliens and relentless descent are forever etched in gaming history. It's a common find on multicade machines, offering a pure, challenging experience.

The fast-paced multiplayer chaos of Gauntlet (particularly "Gauntlet Dark Legacy" or "Gauntlet Legends") is another perennial favorite. Its cooperative dungeon-crawling gameplay makes it a perfect social experience for modern arcades and barcades.

Finally, the classic side-scrolling beat 'em up, Teenage Mutant Ninja Turtles: Turtles in Time, remains incredibly popular. Its four-player cooperative action, based on the beloved franchise, provides an unforgettable and nostalgic arcade session that modern machines happily deliver.

These games endure because they offer pure, uncomplicated fun. Their straightforward mechanics, competitive or cooperative nature, and powerful nostalgia factor make them essential features in modern arcades, proving that great gameplay is truly timeless.