I followed instructions, but it failed to work in Ubuntu/WSL. xlib was additionally needed. (And latest chicken-install won’t accept -y option.)
$ sudo apt install -y chicken-bin libchicken11t64 libx11-dev
$ sudo chicken-install srfi-160 srfi-128 srfi-13 srfi-14 srfi-18 xlib
# and then
$ tar xvf game.tar.gz
$ cd game
$ ./um