Trails, known as in Japan, is a science fantasy series of role-playing video games by Nihon Falcom. Trails is a part of their larger The Legend of Heroes franchise and began with the release of Trails in the Sky in 2004. The games were released exclusively in Asia until the 2010s, with Xseed Games handling its English localization and global publishing until being replaced by NIS America in 2019. Trails games primarily feature turn-based combat, with some spin-offs and later entries featuring other styles of gameplay. The series is commonly praised for its character arcs and worldbuilding. It has also seen adapted and original manga, audio drama, and anime works, with the games selling 8 million copies by 2024.