Details about the mechanics are listed here:

http://www.spacetimestudios.com/show...yer-vs.-Player)

The only change I can immediately note is that we've changed the way PvP grouping works. When a player creates a PvP map, only other players within 5 levels above or below will be able to join that map. For example, if a level 25 creates a game, then other players level 20-30 can join.

1.3.1 will add PvP leaderboards and possibly address the class imbalance problem with the attribute-level-skill-conversion-thingy. 1.4 will add new PvP game types.

-ALS