Alive is a server side only mod. You only need to download this file if you want to run an alive server. You can also play alive single player (against bots) by downloading this file and starting a single-player game. If you happen to be running a server, please drop Auxiliary a line, they'd love to hear from you.
In Alive, if you have more than 10 life, you steadily lose life until you reach 10. Additionally, no life spawns in the levels. However, if when someone dies, life spawns where he or she died. So the only way to stay alive is to kill people.