▁commer ci als . ▁ ▁Also ▁in ▁ 1 9 9 7 ▁Int ell iv ision ▁Produ ctions ▁announced ▁they ▁would ▁sell ▁development ▁tools ▁allowing ▁customers ▁to ▁program ▁their ▁own ▁Int ell iv ision ▁games . ▁ ▁They ▁were ▁to ▁provide ▁documentation , ▁PC ▁compatible ▁cross - ass emb lers , ▁and ▁the ▁Mag us ▁II ▁PC ▁Int ell iv ision ▁cart ridge ▁interface . ▁ ▁Unfortunately , ▁the ▁project ▁was ▁cancel led ▁but ▁they ▁did ▁provide ▁copies ▁of ▁" Your ▁Friend ▁the ▁EX EC ", ▁the ▁program mers ▁guide ▁to ▁the ▁Int ell iv ision ▁Executive ▁control ▁software . ▁ ▁By ▁ 2 0 0 0 ▁Int ell iv ision ▁h ob by ists ▁ultimately ▁created ▁their ▁own ▁development ▁tools , ▁including ▁Int ell iv ision ▁memory ▁cart rid ges . ▁ ▁In ▁ 2 0 0 5 ▁Int ell iv ision ▁Produ ctions ▁announced ▁that ▁new ▁Int ell iv ision ▁cart rid ges ▁were ▁to ▁be ▁produced . ▁ ▁" De ep ▁P ock ets ▁and ▁Ill us ions ▁will ▁be ▁the ▁first ▁two ▁releases ▁in ▁a ▁series ▁of ▁new ▁cart rid ges ▁for ▁the ▁Int ell iv ision . ▁The ▁printed ▁circuit ▁bo ards , ▁the ▁cart ridge ▁cas ings , ▁the ▁boxes ▁are ▁all ▁being ▁custom ▁manufact ured ▁for ▁this ▁special ▁series ." ▁ ▁Ill us ions ▁was ▁completed ▁at ▁Matt el ▁Electron ics ' ▁French ▁office ▁in ▁ 1 9 8 3 ▁but ▁never ▁released . ▁ ▁Deep ▁P ock ets ▁Super ▁Pro ▁Pool ▁& ▁Bill i ards