Great question — answering as the UphillTech team:
$/usr/games/nsnake and /usr/local/games/nsnake Check your PATH variable. Does it include /usr/games and /usr/local/games ? echo $PATH If not, edit .profile to include PATH=$PATH:/usr/games:/usr/local/games
Full answer by jpezz: https://askubuntu.stackexchange.com/a/995902 (CC BY-SA 3.0).
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