same-gnome: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/same-gnome - from package: gnome-games

You may install the required package with command yum install {package}

Error in other languages:
same-gnome: bevel nie gevind nie
same-gnome: comandă negăsită
same-gnome: comando não encontrado
same-gnome: commande introuvable
same-gnome: command not found
same-gnome: käsku ei ole
same-gnome: không tìm thấy lệnh
same-gnome: komanda nerasta
same-gnome: Kommando nicht gefunden.
same-gnome: kommandot finns inte
same-gnome: komut yok
same-gnome: nie znaleziono polecenia
same-gnome: níor aimsíodh an t-ordú
same-gnome: no se encontró la orden
same-gnome: no s'ha trobat l'ordre
same-gnome: opdracht niet gevonden
same-gnome: parancs nem található
same-gnome: perintah tidak ditemukan
same-gnome: príkaz nenájdený
same-gnome: příkaz nenalezen
same-gnome: команда не найдена
same-gnome: командата не е открита
same-gnome: 命令找不到
same-gnome: コマンドが見つかりません