I'm sorry about reviving a long dead thread. But, I'm so excited about it!
I've done it (a Ragnarok online private server running on a Raspberry Pi 3).
Here is the link to the guide:
https://habilisbest.com/raspberry-pi-an ... ate-server
I'm running it on my Raspberry Pi 3 home server.
Server starts just fine, using arm architecture.
It's been more than 60 days, my Raspberry Pi server runs 24/7
Without any problems.