Some games are still playing in 32-bit mode.
Some games are still playing in 32-bit mode.
It's common for older applications to run in 32-bit mode even on a 64-bit system. This can happen due to compatibility settings or how the operating system handles legacy programs.
It's typical to assume the game was developed for a 32-bit architecture.
When the game uses 32-bit architecture, it operates in 32-bit mode. If it supports 64-bit functionality (which it doesn’t), it should function in 64-bit mode.
From Valves titles, Portal, HL, CS, TF2, most software runs in 32-bit unless you choose a 64-bit option or create a shortcut. Even BF4, which launched with a 64-bit beta, starts as 32-bit by default. You need to change it to 64-bit from the original source.
Most titles remain developed solely for 32-bit systems. The operating system you use doesn’t affect the creation process. The folder labeled C:\Program Files (x86) that simtransporter mentioned typically hosts 32-bit applications by default on a 64-bit OS. You can install them in any directory you prefer. To determine if a game needs a 32 or 64-bit version, inspect its files for separate executables. Checking the game’s documentation or searching online is helpful. Steam usually launches with a 64-bit version if available. However, developers may configure the default launcher to run in 32-bit mode. In short, it’s common for games to run in 32-bit, as most are originally designed for that architecture, and performance differences are minimal.