Stardew Valley: a co-op Harvest Moon with marriage, monsters, randomly generated caves
I never really played much Harvest Moon, but even I know that its bankrupting shopowner Tom Nook ranks somewhere between Eddie Murphy and Nick Clegg on the unpopularity scale. I'm intrigued by the farming RPG Stardew Valley, then, which so far doesn't appear to feature any greedy capitalist raccoon dogs, making up for this blessed omission with online co-op and a focus on the four Cs: Crafting, Cave-crawling, Customisation and Cmarriage. (The C there is silent). There's a brand new trailer after the break.
As IndieGames note, Stardew Valley broke into the Steam Greenlight Top 100 not too long ago, so there's a good chance it will be on there when it's done sometime this summer (though it can't help to add your support, if you're a fan.) The game's looking rather tremendous, boasting four-player co-op, randomly generated caves (with monsters), changing seasons, NPC relationships, and of course a goth standing on a beach enjoying a storm. Something for everyone, then.