Mastering Ultimate Mortal Kombat 3 requires a combination of practice, knowledge, and adaptability. Learning each character's move set, combos, and special moves is crucial. Understanding the mechanics of the game, such as block counters and juggling, can give you an advantage. Additionally, studying your opponent's tendencies and adapting your strategy accordingly will improve your chances of victory. Ultimately, practice and experience are key to becoming a skilled fighter in Ultimate Mortal Kombat 3.