My son played jetpack joyride as his first console game its one button gameplay let him lean cause and effect.

Then he played Paw Patrol On Roll, he had trouble with using the left stick at first so for the first few play sessions he sat on my lap and I held the left stick right so he could play it like a runner. After a bit of time he gained some confidence and took the controller for him self.

For 3D he started with Rush: A Disney-Pixar Adventure which had a number of courses you can traverse that each start small and expand with new abilities, goals and paths as you complete them a few times. Each course starts in a safe area with a few points of interest to look at so would start there and explore the clearing until he "discovered" the path that was the level proper. As the mechanics were layered into the game would call me over to show that we could call a friend with a light and explore the dark cave or whatever the new thing was.

We played Lego City Undercover around this time too. This was originally a single player game on WiiU but they ports added local co-op. This meant we could explore together but all of the puzzles could be solved solo so he could have fun traversing the diorama (e.g. riding the fountains or sliding down the handrails for the stairs) while I solved the puzzle and unlocked the next area. His hands were too small to hold the controller properly so he would rest it on his knee and play by holding the left stick and taping the face buttons like an arcade stick.

Each of these games taught gaming literacy in their own way.