Survive is a first person zombie survival shooter set in a procedurally generated open world. The idea of the game is what would you do in the zombie apocalypse. You are put in a random house in a huge completely procedurally generated world. You have to explore the procedural world to find the food, water, and guns you will need to survive the zombie horde.
You kinda rushed it a bit, considering you're selling a pre-alpha already, but hey, you're choice not mine. Enjoy misleading people. However, hopefully their choice in buying it will be rewarded as you create new content for the game.