In this game you will start with 20 lives. Every 6 hours you may hurt someone for 2 lives, and heal someone for 1 life. If this gamemode allows you to heal yourself, more power to you. Once you hit 0 lives you are out. Last player standing wins.
It forces you to have to -2 someone as well as +1 someone. Once you've upvoted someone and downvoted another person, scroll to bottom of the player list and click "Hurt and Heal"
In this game you will have 20 lives, every 6 hours you may hurt someone for 2 lives and heal someone for 1 life. I'm not sure if this gamemode lets you heal yourself, but if it does, more power to you!