Yes you can! The new mode "Battle Mode" can be used to invite any player to a 1v1 match by sharing a one time use code generated when you launch the mode. This mode functions a bit differently than the normal game mode. Each player will start with 10 hp, listed under their avatars. The cube system from the normal mode now removed hp at the end of the game, rather than cubes. Both players will battle in back to back matches until one player has 0 health left. During subsequent rounds, players cannot change decks and are both locked into the one they choose.