Open World Action Game Development

I'm looking for a game developer who can create an open world action game for either Mobile or PC, with a realistic visual style. The game should be made available for free, with my name added as the creator.

Ideal Skills and Experience:
- Proficient in game development for Mobile and PC
- Experience in creating open world action games
- Ability to design in a realistic visual style
- Familiar with making games available for free
- Can add specified credits in the game