The Chronicles of Malta
When a character’s hit points reach zero, he immediately falls unconscious and must make a stabilization check. To make this check, he must roll at least a 10 on a d20 with a penalty to the roll equal to his current hit points. If he fails this roll, he will lose 1 hit point the following round and must make another stabilization check.
If a character fails to make a stabilization check or is otherwise not stabilzed nor healed by another character, he dies when his hit points equal his negative constitution score. A healing spell cast on a dying character, stabilizes that character even if his hit points are still negative.
If a character dies, the player can create a new character with the starting experience points as found on the Character Creation page.