A Nintendo Wii for kids, a kitchen and reading area were among the improvements made to the room which opened to residents on July 28.
Mayor John Hensley cut the ribbon at the grand opening, joined by Councillor Philip Corthorne, Hillingdon Place Association, Hasbro staff and people living on the estate.
Austin Road Estate resident Anis Ahmed said: “A year ago we came together as residents with the council, to come up with a solution for this estate.
“With the help of the council and the residents we came up with the redecoration of this hall.
"Today we have achieved what we can see; a beautiful hall.
“On behalf of the residents I would like to assure Hasbro and the council that this room will be used for creating better relationships and bringing people together.”
The centre is designed to be a social hub and to provide a 'much-needed activities base' for the estate.
Hillingdon Council and Hillingdon Play Association approached Hasbro who funded the project and carried out the work.
Cllr Hensley said: “This centre will offer a friendly and safe environment, a learning centre and a hub for consultation so people can come together and work together.
“Hillingdon Council and Hillingdon Play Association has worked hard to bring these changes about and Hasbro has left a living legacy of its generosity and help for the community.”