Ste, using magic markers, created artwork for future sequels and merchandise, such as style guides of the characters and illustrations of scenes. The Pickfords planned sequels to involve Plok searching for the fleas' home, introduce a setting named Tower Island, and make Plok's comfy chair (which he sleeps on in the end credits of "Plok!") a more crucial part of the gameplay. The Pickfords also drew concepts for toys used for pitches of the SNES game, such as a doll where limbs were joined and detached with velcro. During marketing, a Plok model was created in 3D Studio 4 for a promotional photo of Software Creations.