Invite round
Definition 1 of 1
Pro Tip 1/3Social Gatherings
Used mainly for casual social events, not formal invitations. 
Let's invite Sarah round for a game night.
Pro Tip 2/3British Usage
Commonly used in British English, may be less familiar to American English speakers. 
Did you invite them round for tea this Sunday?
Pro Tip 3/3Not For Public Places
Implies invitation to a private space, like a home, rather than public places. 
I'm excited to invite everyone round to my new flat.