As Wolf said, it's not an easy task giving people other ideas, there's so much involved, and to be honest the process of creating a game is to have an idea, and then realize it by creating it, if you don't have an idea for a game in the first place, then it's going to be difficult to create a game.
I started with an idea for my game "The Island", and as i have progressed through creating media for the levels, through level design, and scripting i've hit limitations, and changed my idea hundreds of times, each time i have had to rethink my premise for the game, which started off being stranded on an island, exploring, encountering mutants, and escaping, and is now starting off in a city, getting a call about a missing professor, searching the city for clues, hiring a boat to the island, then exploring, finding the professor, discovering a plot to create super soldier mutants, defeating the bad guys, and escaping the island, then tracking the evil genius down to another city, confronting and killing him.
A very different story to how i started out, and now a lot less about the island itself than i envisioned, and that's how game development works, you start from a simple idea, then as you plan it out, it evolves, at each stage where it needs to evolve you need that creative spark to bring it to life, if you don't have it in the initial idea phase then it may not come to you at the evolution stages.
Primary Desktop:
i7 7700,k NV1070 8GB, 16GB 3200mhz memory, 1x 2TB Hybrid, Win10.
Secondary Desktop:
i5 4760k, NV960 2GB, 16GB 2333mhz memory, 1x 2TB Hybrid, Win10.
Laptop:
i3, Intel 4000 series graphics, 6GB memory, 1x 500gb HDD, Win8.1.