The bands will top the bill for the event at New Eccles Hall in Quidenham, Norfolk from June 1-3. A further headliner is expected to be confirmed soon.
Reverend and The Makers, The Pigeon Detectives and The Big Pink are among the other acts added to the lineup.
Feeder released their latest album Generation Freakshow last month, and performed several comeback gigs earlier this year.
The Welsh band will embark on a UK tour in November, including shows at Glasgow and London from November 17-23.
Feeder will also perform at this year's T in the Park in July.
The lineup for PlayFest so far is as follows:
Reverend and The Makers
The Pigeon Detectives
The Big Pink
Sonic Boom Six
The B. Goodes
Federation of The Disco Pimp
Boat To Row
Jaymo & Andy George
DJ Andy H
Get Low Cartel
Watch the video for Feeder's 'Children of the Sun' below: