Rhythm of play is the pacing pattern created not just within a single play session but across repeated sessions, return hooks, cooldowns, and long-term habit formation. In Clark’s service-game framing, the game should develop a recognisable cadence of engagement: moments of reward, moments of anticipation, and reasons to come back later. This is one way a service game turns discrete sessions into an ongoing relationship. (Clark, Games as a Service, see source-games-as-a-service)
The phrase is especially useful when discussing cliffhangers, timed rewards, notifications, and the pacing of live content rather than just the minute-to-minute core loop.
Related: game-loops, engagement-led-design, player-lifecycle, context-loop