Lair is a game set exclusively on a fantasy-medieval world and concerns a war between two civilizations – the Asylian and the Mokai. The first, being in a better geographical position, having all the resources in abundance while the latter strife to survive in the barren lands. Both nations were at peace until the Mokai unleashed an attack towards their neighbour country Asylia.
You control an elite "Sky Guard" named Rohn, who belongs in the dragon-riding forces of Asylian army, and tries to stop this assault while at the same time figuring out if there are any deeper reasons behind this seemingly struggle for survival.
In each stage you get mission objectives ranging from defending a castle town to eliminating catapults and armies. The gameplay makes extensive use of the SIXAXIS motion sensor since most of the time you'll be fighting on the air and the movement there is solely dependent on this feature. While in the air you can throw fire to scorch your enemies or engage in a melee mode with other dragons where you can use bites, claws and combo attacks. At times you may also need to fight with your dragon while on ground or have your character battle another dragon-rider while on top of this rider’s dragon.
When you end the mission, depending on how well you did, you may earn a medal (bronze/silver/gold) which in turn allows you to learn new combat moves and unlock extra content in the "Extras" option of the main menu.
There is also a Lair Network option where you can check (while on-line) other players’ stats and achievements.