Judging by the wikipedia page, it's a pain to install other software on ChromeOS. What's more, these computers are very limited in terms of power, so ryzom, if you manage to install it anyway (it should be possible with a bit of tinkering), is likely to lag severely. Personally, I wouldn't risk it.
Have you tried refurbished linux laptops? You can get them for 200 bucks.
Have you tried refurbished linux laptops? You can get them for 200 bucks.
---
Ranger éradicateur de kitins