Note: the game homepage is dead, but the game is rather nice and polished, and you still can get it from many sources.
It needs old stdc++ library, get it [url=ftp://ftp.pbone.net/mirror/archive.fedoraproject.org/fedora/linux/core/1..., extract the package and put stdc++.so.2.8.0 into game directory. Run with:
CPU:133 MHz x86
HDD: ~35 MB