Be aware that v1.47 may break older mods like Frozlunky unless you use updated versions specifically designed for 1.47. Spelunky update for 30 September 2021 - SteamDB
The file contains the Spelunky HD version 1.47 update, which was the first major update for the game in seven years (released September 2021). Installation Instructions Spelunky.HD.v1.47.rar
A new display mode to prevent crashing when using Alt + Tab . Be aware that v1