What games will not be possible to use on Linux?

Most online games that have anticheat. (yes some work but most don’t even if the anticheat could support linux.)

For example, will something like Escape from Tarkov work?

No

And is comparability with older games better or worse than W11?

YMMW. but often linux plays older windows games better than windows.

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midair 2 ? https://www.youtube.com/watch?v=bHu0CfsrKiw

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