You shall input correct path to your file, not just copy the example path from the instruction. But before you dig deeper into Linux, check your hardware. Since you bought a Chromebook, it might not have the videocard able to run the game. When I used to have Linux on my laptop, the game always tried to use the integrated Intel videocard. The game worked, but as the integrated videocard was not able to utilize OpenGl 4 or 5, the game was basically unplayable with chequered skin textures (not to mention low framerates). I had to manually made the game using the discrete Nvidia card by -primusrun command in LifePlay.shI had to put more memory to the Linux before it worked. Now im stuck with making LifePlay.sh playable.
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How make LifePlay.sh executable:
In terminal:
1) Open a terminal window
2) cd to LifePlay directory (e.g. cd /home/m/Downloads/LifePlay_2_14_Linux/)
3) chmod +x LifePlay.sh
4) Run LifePlay.sh
:~$ cd /home/m/Downloads/LifePlay_3_13_Linux/
-bash: cd: /home/m/Downloads/LifePlay_3_13_Linux/: No such file or directory
:~$ cd /home/m/Downloads/LifePlay_3_13_Linux.7z
-bash: cd: /home/m/Downloads/LifePlay_3_13_Linux.7z: No such file or directory
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Not getting past 2) and already have no idea what i should do with 3)..
So, first check the videocard. Most chromebooks have only integrated ones, if your chromebook is like that, you'd better not waste your time trying.