Painter & Miner

These two games were the featured ones on the Micro User Christmas cassette of 1984.

Painter (known as Pyramid Painter in-game) is by Rat Soft.

It's a Q*Bert type game where you move around the 3D pyramid, painting the blocks as you go. You can hop into the Tardis to avoid the discs, and Sid the snake who appears on later levels.

Miner (known as Miner Bill in-game) is by Jason Chown.

You explore the secret diamond mine, collecting the diamonds and avoiding the traps. You start in the Down Shaft.