Gentoo. It will be the last distro you hop to. Because it’s whatever you want it to be. Don’t be afraid. It even has a special command and portage repo to install all the support files and ancient libraries from 2002 your old games need in one shot.
You can snag a binary kernel, browser and some compilers now too if you don’t want to deal with that. It’s not much more difficult than Arch nowadays.