Your dream seems to be rich in symbolism and a blend of various elements that may hold personal significance. Here’s an interpretation of some key aspects:

1. Board Game/Quiz: This may symbolize life’s challenges and the various paths you can take. The competitive aspect suggests that you might be feeling a sense of rivalry or pressure in your waking life. The fact that you were regarded as the winner, despite someone moving quickly, might indicate feelings of being recognized or valued in a situation, even if you didn't put in the same effort as others.
2. Blaine from Pokémon: Blaine, as a character, represents challenges and mastery in a game context. His presence could imply that you are facing challenges that require strategy and skill, or it could point to aspects of your personality related to competition and achievement.
3. Link: The presence of Link, a character known for his heroism and adventure, might signify a desire for exploration or personal growth. This could reflect your aspirations or the need to tackle challenges in your own life.
4. Onett Arcade Theme from MOTHER 2: Music often evokes specific feelings or memories. This theme could represent nostalgia or a longing for simpler times or childhood experiences, especially connected to play and leisure.
5. Grandma’s House and Old Oreo Cookie: Visiting your grandmother's house may symbolize comfort, nostalgia, or a return to your roots. The old Oreo cookie that you spit out could represent something from your past that you no longer find appealing or relevant—a situation, relationship, or belief that you are ready to let go of.

Overall, your dream might suggest a blend of navigating life's challenges while reflecting on your past and what you value. It could be encouraging you to embrace both competition and comfort, while also urging you to discard what no longer serves you. Consider what areas of your life might be calling for recognition or where you may need to let go of outdated beliefs or habits.