How do you play free play on Lego Star Wars 3 ds?

In LEGO Star Wars 3 for the Nintendo DS, Free Play mode allows you to explore levels with any characters you've unlocked. To access Free Play, select a completed level from your save file and choose the Free Play option. You can then select your desired characters, each with unique abilities, to navigate through the level and discover hidden items or complete challenges. This mode encourages exploration and creativity as you utilize different characters' skills.