If you get into both, you are going to have gone through multiple phases of interviews. And remember you are interviewing them as well. So get your questions ready. Find out the work, find out the tools and ask everything. That will really help you in finding out the best fit for yourself.

I never really thought of that. Thank you! :) I'll ask them what their interns are up to, and what future projects can they work on.

I do know that the local Ubisoft office here is looking for Unity devs for mobile games (according to their linkedin profile), maybe that's not the direction I should go towards as it doesn't involve graphics programming and because I don't know Unity.