Steam app is now 64-bit only on systems that support it, 32-bit support enters final countdown — 32-bit users will stop receiving updates in 2026

Valve’s latest client update shifts Steam to 64-bit on Windows systems.

Tom's Hardware

Valve has previously said that 32-bit Windows installations represent around 0.01% of active Steam systems.

I feel like it’s fair to sunset 32-bit Windows support if this segment represents 0.01% of your installed base

If they’re willing to issue refunds for all games bought for 32bit.
Are there any games that won’t work on 64bit?
All of the 16bit and older games will have to be emulated.

While true… I’m not aware of a single 16-bit game sold by steam. Are there actually any?

Admittedly sample size of 1, but the only 16bit windows game I care about (Castle of the winds) runs fine on wine.