Also, system requirements: Itch.io games can have varying requirements. Poppy Playtime's full game is a 3D horror game with some decent graphics, so the system requirements might be modest but should be mentioned.

**Warning

I should also include some tips for players, like how the puzzles work, the atmosphere, and maybe the horror elements—since it's a horror game, it's good to give a heads-up about the intensity of the scares, especially from the antagonist, the Poppy.

I need to structure the article. Start with an introduction about Poppy Playtime and its reputation. Then introduce Chapter 4's availability on Itch.io for free. Next, explain how to download and install it. Highlight the game's features and any unique aspects of Chapter 4, like new areas or challenges. Also, mention any prerequisites, like having previously played earlier chapters, but since it's a chapter system, maybe the chapters are standalone or require the previous ones. Wait, but most puzzle games like this might have a continuity, so Chapter 4 might require playing the first three to understand the story, but maybe the developers made it possible to play as a standalone. But I need to check that.

Also, confirm that Itch.io is the platform referred to correctly. Sometimes, people might mix up .io domains or other platforms, but Itch.io is correct.

Incorporate keywords like "Itch.io Poppy Playtime Chapter 4 Free," ensure the article is SEO-friendly by using that phrase appropriately. Also, mention that it's ideal for horror gaming enthusiasts and maybe compare it to other games in the genre.