Mod Menu ((install)) - Forza Horizon 4

: Manually change seasons (Winter, Spring, etc.) or freeze the time of day.

To understand the prevalence of mod menus, one must first understand the economy of the modern racing game. Forza Horizon 4 is built around a "live service" model where players earn in-game currency (Credits) to purchase rare cars, upgrade their vehicles, and customize their virtual garages. For many, this progression system is the core of the fun; the struggle to afford that dream Ferrari or the hunt for a rare "barn find" provides the gameplay loop with meaning. However, for others, the grind can become tedious. Mod menus appeal to players who wish to bypass this structure entirely. By injecting code into the game’s memory, these menus allow users to add millions of credits instantly, spawn any car in the game regardless of price, and manipulate physics to achieve impossible speeds. For the single-player experience, this can be viewed as a form of "sandbox" play—turning a structured racing game into a toy where the only limit is imagination. forza horizon 4 mod menu

No, if you go online.