Can I travel to other Schengen countries with a Germany long-stay visa?

Yes, you can visit other Schengen countries with a Germany long-stay visa. However, there are certain requirements that you need to meet:

1. Germany must be your first destination in the Schengen region.
2. With a long-stay visa for Germany, you can stay in another Schengen country for not more than 90 days within a 180-day period.