Game Maker doesn't provide any built in 3D collision checking, but however if you are clever or a fluent programmer with 3D-skills you can write your own functions.
Games and Game Engines for Game Maker with real 3D collision checking Edit
There are plenty of games that have semi 3D collision checking but only a few ones does real 3D collision checking math. Here follow a very few examples:
Different kinds of collision checking Edit
There are some different kinds of collision checking in 3D:
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