Rummy is a family of matching-card games whose core mechanic—forming sets and runs—bridges chance and skill, making it a useful lens for studying digital play within the broader Online Casino landscape. Among contemporary variants, Okrummy is often cited as a streamlined, mobile-first interpretation, emphasizing brisk rounds, clean interfaces, and social presence. Theoretical analysis of such apps benefits from considering three layers: game structure, platform mechanics, and governance. At the game-structure layer, classical rummy optimizes decision-making under partial information. Players evaluate meld probabilities, discard signaling, and draw order, balancing short-term safety against long-term hand potential. In app-based play, timers compress deliberation, turning rummy into a study in bounded rationality, where heuristics—like tracking live discards or prioritizing inside straights—substitute for exhaustive enumeration. Platform mechanics shape outcomes as strongly as rules. Random number generators govern shuffling