Episode: 1 When There Was a Surprise Episode: 2 When Custard was Grounded Episode: 3 When Custard Wrote a Book Episode: 4 When There was an Elephant Episode: 5 When Custard Was Very Very Naughty Episode: 6 When the Books went Bye Bye Episode: 7 When Roobarb Went on a Fitness Drive Episode: 8 When Roobarb Found the Hieroglyphics Episode: 9 When it Ended in Tears Episode: 10 When There was A Big Band Episode: 11 When the Laughing Had to Stop Episode: 12 When Cookie Fell Out of the Sky Episode: 13 When There Was a Wind-Up Episode: 14 When Modern Thingumajigs Need Tweaking Episode: 15 When Communications Weren't the Best Episode: 16 When the Garden Was Dry Episode: 17 When There Was a Time Warp Episode: 18 When There Was a Cuckoo Episode: 19 When There Really Was a Something Episode: 20 When There Was a Pottery Party Episode: 21 When the Computer Went on the Blink Episode: 22 When It Was Cool to Be Smooth Episode: 23 When There Wasn't a Bolied Egg Episode: 24 When There Was a Duel Episode: 25 When the Wind Blows the Space Age Will Stop Episode: 26 When There Was an Opera Episode: 27 When It Was Wibbling Week Episode: 28 When the Dinosaur Broke Loose Episode: 29 When the Astrognomes Landed Episode: 30 When the Mouse Arrived for Christmas Episode: 31 When Everything Went Lumpy Episode: 32 When Walter's Web Caught Roobarb's Eye Episode: 33 When There Was a Dance Festival Episode: 34 When the Ballet Hit the Skids Episode: 35 When Roobarb Was Bowled Over Episode: 36 When There Was Magic Episode: 37 When There Was a Country Fayre Episode: 38 When Jeremy Barker Turned Up Episode: 39 When the Molecules Got Loose