“It’s time to log into Xbox LIVE and spend MS Points… and I’m all out of Points…”

So says the mighty Duke Nukem (who-may-not-have-really-said-that) as he arrives on Xbox LIVE Arcade today in the form of the side-scrolling action platform game, Duke Nukem: Manhattan, for 800 MS Points.

Duke is joined by the strategy board game, RISK: Factions, which features a range of inventive sides to choose from including zombies, cats, robots and yetis… bizarre. This game will also cost you 800 MS Points.

Head on down below to watch a few trailers for both games, and read official descriptions describing descriptions of describable gameplay:

Duke Nukem: Manhattan Project

“Duke Nukem is back! New York City is being overrun by a mutant menace and it’s time to de-worm the Big Apple. This explosive 3D action game features Duke Nukem defending the city that never sleeps, and its babes, from the evil Mech Morphix across 24 levels from Chinatown to Space. A super-sized collection of weapons, enemies and bosses await.

“As Duke would say, “Babes, Bullets, Bombs. I love this job!””

Duke Nukem: Manhattan Project – Debut XBLA Trailer

RISK: Factions

“Wage war with five factions, each with unique abilities, in the original game of strategy and world domination! Play with the classic rules or reign supreme with objective-based and world conquest scenarios as you command your army and take tactical gambles to win the day.

“Then challenge your friends in local or online multiplayer and see how you stack up on the leaderboards.”

RISK: Factions – Chapter I: Quiet on the Human Front

RISK: Factions – Chapter II: A Bridge Too Fur

RISK: Factions – Chapter III: The Red Badge of Storage

RISK: Factions – Chapter IV: Zombie Faction

RISK: Factions – Chapter V: Avalanche Now