opengl-game-wrapper.sh: 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/opengl-game-wrapper.sh - from package: opengl-games-utils

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

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