Hello again everybody.
Im comming back with another question.
It is possible to make a realtime multiplayer game using construct 2 ajax send/request url to a php file that will upload the data into the database?
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There is a whole section on multiplayer in the FAQ section.
If you are looking for realtime though AJAX may not be your best bet. The socket.io would probably be better.
FAQ section
Go down to the section on Multiplayer/Networking there are some good posts there.