You don't have to know the difference between Dennis Wise (who is referenced during it) and Ernie Wise (who is not) to be immensely gripped by The Pass, the scorching new Royal Court play that traffics ostensibly in the world of football only to widen out into as corrosive a study in psychic implosion and self-destruction as the London theatre has seen in an age.

This political satire is hardly a case of rapid-response playwriting. Opening in London's West End last night, after a month touring the regions,The Duck House is a farce about a fictional MP caught up in the parliamentary expenses scandal which hit the headlines way back in 2009. One certainly might have expected Dan Patterson (of TV’s topical Mock the Week) and Colin Swash (from Have I Got New for You) to have been swifter out of the blocks in co-authoring the script.

For increasing numbers of people, food is theatre, so what better time to combine the two into the slight, sweet, determinedly socially conscious evening that is Gastronauts? The Royal Court "happening" of sorts is catering to audiences of 60 per show during its sellout run. A devised piece that turns playgoers into diners while also asking them to question the ethics and ethos of food, the show in its questioning impulse seems the perfect antidote to festive-season excess. That said, some may be too busy pigging out on the crispy kale - please sir, may I have some more?

One of the best kept secrets about contemporary theatre is that audiences rather like short plays. Of course, there’s nothing wrong with epic classics, but sometimes it makes a change to witness a playwright who has something to say and manages to say it with economy in 90 minutes or less. New writing’s master of this trend is Debbie Tucker Green, whose plays don’t linger too long on stage, nor do they burden you with an interval. Her latest, Nut, is typically short, just 70 minutes — but is it any good?

The Royal Court is justly proud of being the home of British new writing, but it is also a venue which has a great tradition of staging work from abroad. From bringing Brecht and Beckett here in the 1950s to its more recent international summer schools, this is a place where you might make the acquaintance of Eastern European, Latin American or Russian playwrights. Now, following in the footsteps of Chennai-based Anupama Chandrasekhar, whose play Disconnect was here in 2010, comes another Indian talent.

Once upon a time, there were two cultures, and they were at odds. A forested wilderness stretches between the kingdoms of Sealand and Lagobel, as we glean from the childishly-drawn, giant map that serves as a front cloth for the NT's new musical spectacular – directed by Marianne Elliot and opening in the Lyttelton last night. The map shows, on one side of the wilderness, Sealand’s coastal realm with winding rivers and a chateau bristling with turrets, all in shades of blue.

You could call it the iceberg syndrome. It’s a work of art that is a flash, a sliver or an imprint: think of a passport photograph, a cheap trinket or a half-finished graffiti. Yet beneath the simple image there is a world of pain. Rachel De-lahay’s new play, a follow up to her award-winning The Westbridge, offers snapshots of the great migrations of recent years, and slowly reveals the raw emotion of these simple tales.

Having boundaries actually sets us free. So Neil Armstrong's wife argues. She is dogmatically keen to stop her husband rocketing off to the moon in the first scene of The Lightning Child – a groundbreaking show in so far as it's the first musical to premiere at Shakespeare's reconstructed wooden "O", opening last night. Armstrong (Harry Hepple in a space suit) does not agree with his spouse's imposed limits, however. A lunar voyage is, he says, his chance to become sublime.

Since his arrival about a decade ago, Dennis Kelly has proved himself to be a master of versatility. He has written in-yer-face shockers such as Osama the Hero and Orphans, elaborate experiments in theatre form such as Love and Money, sprawling epics including The Gods Weep, the paranoid fantasy Utopia for Channel 4 and the deliciously heartwarming Matilda the Musical. Now making his belated debut at the home of British new writing, the question is: which style will he adopt?

There’s a united nations of Great Britain feel about this site-specific Royal Court show: it is a National Theatre of Scotland piece played at the London Welsh Centre as a co-production with the top English new writing company. It’s an entertaining treat — a riotous romp of rhyming couplets, devilish encounters and wild karaoke — curated by Vicky Featherstone, formerly head of the NTS, which premiered the show in Glasgow in 2011, and now supremo of the Royal Court.