I have some question to ask.

Hi guys.I have some questiones to ask.
1)I want to make a game that Android phones,tablets and İOS phones can play in multiplayer mode.How can i make that.
2)Is Photon Server capable with Unity3D.I want to know can you help me out?

  1. Yes. Learn how to code, model, skin, rig, animate, texture, and integrate a video game. Should be simple.
  2. Yes, Photon does have a Unity SDK.

I know, i have one game but i dont know how to make a multiplayer

For implementing multiplayer using Photon you should refer to Photon reference. To do it using Unity stock networking capabilities you should refer to Unity reference. To do it using uLink you should… You get the idea.

EDIT: Also for general approaches to implementing multiplayer games you should refer to Google.

EDIT: For more specific answers you should post more specific questions.