American Underground, the recently opened basement space at American Tobacco Campus in downtown Durham, has announced five new tenants.

The startups include Acorn Innovestments, Adzerk, Jaargon Ltd., Preation and Two Toasters.

They join the earlier announced companies Launchbox Digital, Joystick Labs and the Council for Entrepreneurial Development.

American Underground includes 26,000 square feet of space on the lower levels of the Strickland and Crowe buildings. It had been used as storage space until this fall.

The space is designed for startups -- rents are about $5 per square foot cheaper. It includes offices and suites, shared conference rooms and break rooms and a classroom that accommodates 60 people.