pi@raspberrypi:~ $ apt search box86
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box86/unknown 0.3.1+20230322.3043f50-1 armhf
Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (host system needs to be 32bit little-endian)
box86-android/unknown 0.3.1+20230323.1a0888c-1 armhf
Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (host system needs to be 32bit little-endian)
box86-generic-arm/unknown 0.3.1+20230323.1a0888c-1 armhf
Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (host system needs to be 32bit little-endian)
box86-rk3399/unknown 0.3.1+20230323.1a0888c-1 armhf
Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (host system needs to be 32bit little-endian)
box86-rpi3arm64/unknown 0.3.1+20230323.1a0888c-1 armhf
Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (host system needs to be 32bit little-endian)
box86-rpi4arm64/unknown,now 0.3.1+20230323.1a0888c-1 armhf [installed,automatic]
Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (host system needs to be 32bit little-endian)
box86-tegrax1/unknown 0.3.1+20230323.1a0888c-1 armhf
Box86 lets you run x86 Linux programs (such as games) on non-x86 Linux systems, like ARM (host system needs to be 32bit little-endian)
pi-apps-5f3374a7/now 1.0 all [installed,local]
Dummy package created by pi-apps to install dependencies for the 'Box86' app
Perhaps this was intentional for backwards compatibility, but I just wanted to ensure you were aware of it.