Rule 1: Control your dragon by left-clicking to flap its wings. By maintaining steady rhythm, you can control your altitude and swoop down on enemies or climb out of reach.
Rule 2: Your main objective is to defeat other players in aerial combat by jousting them off their dragons.
Rule 3: Defeating enemies allows you to collect their dropped loot. Be careful not to fly too low while collecting loot to avoid being ambushed.
Rule 4: Collecting loot increases the length of your lance. The longer your lance, the greater your reach and advantage in combat.
Rule 5: Survive as long as possible by continually defeating enemies and expanding your lance length. The last dragon rider standing wins!

Action: Flap Wings - Left-click anywhere on the screen.
Action: Change Directions - Move your mouse cursor to point the dragon in the desired direction. Left-clicking will propel your dragon in that direction.
Action: Strike - Position your lance towards your enemy and make contact to knock them off their mount.

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To win, you must defeat all other players by jousting them off their dragons, while surviving and growing your own lance by collecting loot.

If you get knocked off your dragon, you are eliminated from the current round.

The provided information doesn't specify any customization options. Focus on growing your lance by collecting loot from defeated enemies.