If you want to create a game but don’t know how, why don’t you try making a small text forum RPG “Choose your own adventure” type of game then? It doesn’t require any programming, it can be a lot of fun if done right and most importantly, it will require almost as much work as a computer game because you’ll have to:
- Construct a small but fully developed story with basic premise, some key events, a goal for your players to fulfill and an estimated ending.
- Construct basic logic that will limit the players and their enemies, you don’t have to use DnD or any other horrendously over-complicated system, just a basic set or rules and a simple digital dice to determine the outcome for combat and other events.
- Construct a fully developed environment just like in any other game for your players to explore, map key events, monsters, items and so on.
- Create a set of rules for creating characters and invite a few people to join the game.
And basically there you go, you will play as a narrator and operate the environment, enemies and events while your players will operate their respective characters, it can be done on Dicord or on a forum and it will also give you a very good idea about how much work is required for making even the most simple text RPG let alone a fully developed computer game which requires same things plus tons of programming, balancing, testing and many other things in-between.