While in middle school not long after getting my VIC-20 I created a mini game.
On a random line in the top half of the screen an X would scroll across the screen at a random but steady speed. I would press the spacebar to get a single arrow to launch from the bottom upwards to try and hit the X. I kept adding to the game, coding was more fun than playing, by doing things like making the direction of the X random. I entirely forgot about the game as my interests evolved.
Years later I saw Duck Hunt on Sega. Opportunity missed, lol.
Edit: Writing that reminded me of another fellow my age, Richard Garriott. He was also creating games early on but he saw fit to actually try to market them at a local computer shop while in high school. Later he created a popular series of games and later still he created the first playable online virtual world based on those games. He made his millions and spent some of them on a trip to space. Life lived.
Believe, follow through and enjoy the ride, but do remember the early lessons :)