How can I install, configure and run DOS games?

Jazz Jackrabbit does not need DosBox if you run OpenJazz.

Alien Carnage and Duke Nukem 1 still need DosBox.

Install DosBox if you have not already:

sudo apt update && sudo apt install dosbox

Create a games directory for Alien Carnage:

mkdir -p /home/cpi/games/aliencarnage

Go to that directory:

cd /home/cpi/games/aliencarnage

Get the Alien Carnage zip:

wget https://image.dosgamesarchive.com/games/acfreew.zip

Unzip it:

unzip acfreew.zip

Create a menu link that utilizes DosBox:

echo 'dosbox ~/games/aliencarnage/CARNAGE.EXE -exit -exit' > /home/cpi/apps/launcher/Menu/GameShell/aliencarnage.sh

Reboot and let me know if it runs.

After that I can help you to set the DosBox settings right for video and controls. The resolution will be wrong in the beginning!