Only a few different cartridges were relased for the nice designed "Colourstars" cartridge-Pong system. In our collection we have:

Cartridge No.1 - Ball / Paddle - Rarity: 5

Cartridge No.2 - Stunt Rider + Joypaddle - Rarity: 6

Cartridge No.3 - Motor Racing - Rarity: 6

Cartridge No.4 - Tank Battle - Rarity: 8

Cartridge No.5 - Wipe Out - Rarity: 6

Cartridges were sold in blister boxes, that's why only few original packages survived. Below you can see the cardboard part of the blister box. Unfortunately the plastic part doesn't exist anymore.
Instructions were printed on the back of the cardboard part.

Cartridge No.2 - Stunt Rider - Rarity: 7 (boxed)

Cartridge No.5 - Wipe-out - Rarity: 7 (boxed)

Please note: Colourstars systems were supposably manufactured by Teleng (Essex/England) and sold under the following brands: Teleng (Colourstars), Sovereign (Coloursports), Mercury (Commander) & Teleplay (Programmagame).

The manual of the Colourstars system and the Ball & Paddle cart #1: