(Image credit: Left: Playstack / Right: Gorica Poturak via Getty Images) Playstack, publisher of some of the most acclaimed indie games in recent years—games like Balatro, Abiotic Factor, and The Case of the Golden Idol—is likely to find itself under new ownership in a proposed sale that would see it land in the same investment portfolio as Fandom and GameSpot (via Game Developer ). Playstack's current owner, investment group TruFin, is encouraging its shareholders to approve a proposed agreement to sell its 84.5% stake in the publisher for approximately $151 million to Integrated Media Company , a wholly owned subsidiary of private equity firm TPG that—in addition to Fandom and GameSpot—also owns entertainment brands like Curse and TV Guide.…