Basic adventure game in which you play Agent Flint, its not very advanced but these were very popular on the Electron which was starved of the more advanced (not to mention mode 7) games.

Early potters adventure, this one doesn't have much detail, basically just six or seven word room descriptions, its nothing compared to the later games.

Early-ish 1985 game from Potters, this is more of a fantasy adventure all about wizards and orbs of power, its not as good as their later efforts.