https://github.com/NY00123/refkeen/releases

If you have already installed the Catacomb family of games via GOG, this source port autodetects them in their default install locations.

If you have non-GOG installations, when you first run one of the Keen Reflect.exes for the various Catacombs, select "Home Dir," then keep going until you have the directory where your game is, and then press "Confirm".

Also here: https://www.gog.com/forum/catacombs_pack/any_mods_engine_updates ;-)

I see the port contains a lot of features: what if on Android, what if on wii controller, what if no keyboard, what if no hands and brain, etc. But the most basic feature is absent: how to reconfigure basic keyboard + mouse controls? Is it so unimportant it has no place in your extrasuperlong description sheet? Or i'm so stupid I can reconfigure in almost every ancient and modern game but this one? All I need is being able to use WASD and switch off mouse movement (I know there are programs for it but interesting how the port's author solves this problem). Ironic I can do it ingame where its possible (like Cat3D), in Dosbox but not in this magnificent port launcher.