Thanks so much for your reply, toshiro, that was a lot of very helpful information!
I guess the bit with getting fluent in japanese by the time I plan to start working there is my biggest problem right now. Since I last posted here, I've been continuously improving my Japanese skills - but I've realized just how much I still need to learn in order to be "passable" with my language skills in day to day conversation. I think I underestimated just how much more time it takes to learn a non-european language.
In the meantime, I completely dropped the idea of working as a language teacher and instead started doing some more research on Japanese game studios.
I've heard stories of people sending in english applications to studios even though there were no explicit english advertisements. Is that - in general - a strategy with moderate success chances or is sending out english applications mostly a waste of time (because no one will be bothered or even able to read them)?
On the other hand, I've found a few studios who advertised their jobs in horrible copy & paste english - as a rule of thumb: are these kind of job advertisements genuine or is this a thing companies do so they look international from the outside (when in fact they'd only hire applicants with solid japanese fluency anyway)?
Other than that, I've managed to find a couple of english speaking companies located in japan - that's where I see most chances right now. Maybe the working conditions at those studios will be a little better as well. I've heard a lot of horror stories (on here but also in other places) by now. Although I expect to be working overtime as a game designer regardless; that's just how game development works
I will have my B.A. in Game Design by October and my plan is to go to japan on a work and travel visa for a couple of months after I graduate. Is this my best option?
I think looking for jobs while actually being there is the best chance I have. Or is it?
My question is, does it make sense for me to go there during the general recruitment season? I've heard that these kind of recruitement programmes and tests are not very accessible for non-japanese speakers because they require very high language proficiency. Is this true or are there exceptions?
Do companies which look for international talent look for international talent on the same schedule as they look for japanese candidates?
On the other hand, there's english speaking companies in Japan, too. Do they tick the same as japanese speaking companies in that they have a lot of openings during recruitment season? Or is it different for more international oriented companies?
I know, these are very broad questions and there's no definite answers; I just wanted to post an update and see whether someone might have any suggestions. This thread has been a huge help for me so far. So thanks a lot!