Arcade machines have long been designed to keep players engaged by adapting to their skill levels. Skill-based progression in arcades is achieved through a combination of dynamic difficulty adjustments, score-based rewards, and level design.

1. Dynamic Difficulty: Many arcade games increase difficulty as players advance, introducing faster enemies, tighter timing, or complex patterns. This ensures a steady challenge without overwhelming beginners.

2. Score and High Scores: Players are motivated to improve by competing for high scores, which often unlock bonuses or special modes, reinforcing skill development.

3. Level Design: Early levels are simpler, allowing players to learn mechanics, while later stages test mastery. This gradual ramp-up keeps gameplay satisfying.

4. Lives and Continues: Limited lives encourage precision, while "continue" options let skilled players push further, balancing accessibility and challenge.

By blending these techniques, arcade machines create a rewarding loop that keeps players hooked while accommodating varying skill levels.