1. For Win User, you can just play!!! 2. For Mac User, you should find the folder 'VoodooDoll-mac-x64' (this folder is in the root of the game 'Drop one NPC to another') and in that folder it called 'myapp.app', and you have to give the permision to let it run! 3. For Linux or SteamOS or Ubuntu Users, you should find the folder 'VoodooDoll-linux-x64' (this folder is in the root of the game 'Drop one NPC to another') and in that folder there is a file called 'myapp', you should use terminal cd in the folder 'VoodooDoll-linux-x64', to run the game (Do not click it to run), you should then type ./myapp and press Enter Key If you cannot see pictures in the game in Linuxtry to move the whole folder 'VoodooDoll-linux-x64' to an USB flash Disk and then cd in in the folder 'VoodooDoll-linux-x64', then type ./myapp and press Enter Key the reason is the format of your hard disk is not suitable for this game.