you louse 6 rouds one bay one
you unlock mini games but defeating other dances example: Elvira
Get the highest score in the other mini games
You have some at the start already but too unlock some you do the board games
Beat the Adventure mode. Then you can now unlock mibi-games mode.
nice mini-games
It is in the downloaded content, I guess it's free? It gives you 6 new mini games.
By winning the first game.
You have to unlock them buy chatting Aubree8327
To unlock the mini-games for the Game Gear in Sonic Adventure DX, you need to collect the Game Gear titles hidden throughout the game. These titles can be found in various locations and typically require exploration and sometimes solving puzzles. Once you collect a certain number of these titles, you can access the mini-games from the main menu. Additionally, ensure you've completed specific requirements or objectives related to the mini-games to unlock them fully.
You can unlock the Berry Crush game, the Union Room, and the two Mini-Games on Two Island
All i know is that the mini mushrooms are in world 2 boss castle(to unlock world4) and world 5 boss castle(to unlock world 7) you have to beat the worlds 2 &7 boss when your mini Mario, in order to unlock worlds 4 & 7, it will be a little difficult beating the bosses when your mini Mario but it's worth it
by completing the game and finishing all the puzzles and mini games