At the start of each round in Classic Mode, you'll be presented with two or three branching paths, each leading to a different set of opponents or challenges. These paths are represented by different colored doors:
- Green Door: Typically leads to a standard 1-on-1 or 1-on-2 battle against a single character. These are generally the easiest encounters.
- Yellow Door: Often leads to a team battle, a multi-man brawl, or a battle with specific stage hazards. These can be more challenging but offer slightly better rewards.
- Red Door: Usually signifies a more difficult encounter, such as a metal character battle, a giant character battle, or a battle against multiple strong opponents. These paths yield the best rewards and increase your Intensity more significantly.
Strategically choose your path based on your character's strengths and weaknesses, and your desired Intensity level. If you're aiming for a high score or specific unlocks, taking more Red Door paths is recommended. Remember that your Intensity level increases with each victory, making subsequent battles harder.