Alternatively, it might be more tactical to discard cards that are unlikely to help you complete sets or runs in order to draw new cards that might better support your overall plan. In theall slots end, being able to discern when to hold and when to discard in Rummy Arena calls for keen observation, strategic planning, and flexibility in response to various game situations. To outwit your opponents in Rummy Arena, you must use strategy. This entails choosing which cards to keep, discard, or pick up after carefully considering your options and your opponents' tactics.