The famous port of DOOM for the Linux framebuffer, runs smoothly on Tilck. In order to try it, first run:

./scripts/build_toolchain -s build_fbdoom

And then re-configure the CMake project by enabling the EXTRA_FBDOOM flag this way:

./scripts/cmake_run -DEXTRA_FBDOOM=1

It makes the scripts generating the initrd to install fbDOOM in the image as well.

Finally, rebuild Tilck's image by running:

make rem

Which is just a shortcut for:

rm -rf ./build/fatpart ./build/tilck.img; make

NOTE: the build_toolchain script just downloads the Freedoom WAD files, because they are not protected by copyright. If you have the original Doom1.WAD file, just place it in:

<TILCK>/toolchain2/i386/fbDOOM/

Before rebuilding Tilck's image, and the build scripts will automatically use it instead.