Awarding the album four stars at Worship Leader, Jeremy Armstrong writes, "Overflow is filled with proclamation songs as well as personal praise to the God who is worthy".[2] Awarding the album three stars at CCM Magazine, Matt Conner states, the album is another energetic, youthful live set steeped in experiential language (“I don’t care what it looks like, I’m diving in.”) that longs for more of the Holy Spirit's work.[3] Kaitlyn Barbour, indicating in a two star review by New Release Today, describes, Every generation seems to be represented in this versatile collage of praise anthems from the Australian band's worshipful work of art.[4] Signaling in a four star review from Louder Than the Music, Carolyn Aldis responds, This is a CD that will be on repeat in my home, a rollercoaster ride of an album, with dance songs that take you up to the top, push you over the edge, arms up, smile on your face as you rush deeper in, the twists and turns of the ride bringing a smile of wonder to your face, the beauty of the slower songs keeping you hanging in mid-air, soul in your throat, enjoying the closeness of God, far above the world.[5] Joshua Andre, specifying in a four and a half star review for 365 Days of Inspiring Media, replies, "Overall an enjoyable album that has definitely continues my reinvigorated interest for Planetshakers a bit more; this album has certainly created momentum."[6] Giving the album three stars for Today's Christian Entertainment, Kelly Meade states, "Planetshakers continues the trend of modern worship that has been at the forefront in recent years delivering music that directs the hearts of listeners to our Heavenly Father."[7]