World and Human Action Models towards gameplay ideation - Anssi Kanervisto; Dave Bignell; Linda Yilin Wen; Martin Grayson; Raluca Georgescu; Sergio Valcarcel Macua; Shan Zheng Tan; Tabish Rashid; Tim Pearce; Yuhan Cao; Abdelhak Lemkhenter; Chentian Jiang; et al. (Nature, 2025)