How to make a game like this "Mystery Case Files Dire Grove (adventure, puzzle,..)

Unity Engine
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How to make a game like this "Mystery Case Files Dire Grove (adventure, puzzle, hidden object) (video)

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Who help me make a game like this?

Please!

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I can say from experience that implementing a HOPA-style game is fairly non-trivial; it’s not something that can be easily covered in a post or two.
Here’s some things you’ll want to research (in no particular order):

  • Resource Managing - Most games of this type will have a large quantity of fairly high resolution art, and an open-world design that requires streaming in data rather than loading the entire level at once. Also, managing your draw calls will be important if you want it to work on iOS/Android.
  • Inventory System - Luckily, I think there are already tutorials for doing this in Unity.
  • Hint System - Making a good hint system is somewhat tricky, because it needs to keep track of your progress and suggest a next step which is possible and useful. Ideally, it also needs to keep track of the level navigation so that the hints don’t involve excessive moving back and forth.
  • Cutscenes - Having a system where the artists can tweak cutscenes without tying up the main level files or having a programmer involved will save you lots of time.
  • Accurate Selection - Having a simple box for click detection isn’t going to cut it in a cluttered hidden-object scene.

I wouldn’t try to tackle this as your first game in Unity; make some smaller games that use one of the component parts first.

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I also try to make such games, but in Unity I can say from experience that it will not be easy. What I would like to know if there is software especially for creating games in HOPA format.