Earnestly desirous.
Having a feeling of anxiety or disquietude; extremely concerned, especially about something that will happen in the future or that is unknown.
Nervous and worried.
Accompanied with, or causing, anxiety; worrying.
Open to anyone and with no or few rules.
Deathmatch, sometimes specifically one in which every player is pitted against all the others.
Chaos; a chaotic situation lacking rules or control.