There's a Finnish film I saw a while ago called Tuftland that features a cult. It is a bit on the "cheap-ish" side, but it has some similar vibes to Midsommar; young woman lured into a "vacation" place while dealing with a breakup. It was actually released *before* Midsommar, though. It wasn't great, lots of flaws, but I would say it was an interesting watch.
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