I have both the native Linux version and the Windows version on Heroic launcher (via wine 6.0.3)
Both work fine with mouse+keyboard
Neither recognizes any of the attached gamepads
Most other games recognize the attached gamepads - e.g. Speedrunners on Steam Linux
(The controllers are:- 1 of XBox official, 3 of PS4 dualshock 3)
In the past, Crimsonland has recognized multiple dualshock4 gamepads, so it's something I've changed

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In my X11 joystick settings, "StartKeysEnabled" and "StartMouseEnabled" are set to false
(This should prevent X from treating gamepad inputs as mouse+keyboard outside of games, but isn't 100% at this)
There is Steam + numerous emulators on the same system, but I'm generally not loading those before trying to open Crimsonland.

So is there anything unusual about Crimsonland's gamepad support?
I wonder if it's not true gamepad support and instead relies on X treating them as a mouse+keyboard?
(Which for me would be an extremely undesirable workaround)