It looks like in general, voice actors in video games are not entitled profit sharing nor residuals unless it's in their specific contract with the video game studio. This is very different from the way it works in, say, broadcast (radio/TV)... For example, if you're a union voice actor on a nationally syndicated commercial, you're getting paid residuals based on the number of lines you have for every instance the commercial is screened/aired. The PRO collects your royalties if its radio and SAG collects "usage fees" if its TV.
Found this article about the topic as it concerns video game voice actors:
The median individual income in Los Angeles is $27,987. That's not even enough to cover the rent of a mid-range two-bedroom apartment. L.A., however, is a town of haves and have-nots. "The average annual wage in the entertainment industry was $117,000" as far back as 2011, according to the L.A...
www.laweekly.com
800 a day as union-standard pay for one-off contracts is one thing, but 4,000 (the equivalent of a regular week's pay) for the star of a hit franchise is crazy. Even worse, video games typically run ad campaigns online instead of on TV, and there's very little in place to collect residuals from youtube ads and etc. For a game that big though they're definitely gonna run some TV ads, so she likely would've stood to make about the same as her rate off of her TV residuals
Cold shyt... the VG industry is getting away with highway robbery on not standardizing royalties considering that they're literally the biggest, most profitable sector of the entertainment industry at this point. Youtube Ads alone should be effectively quadrupling lead voice actors' rates on mega franchise titles, especially because youtube videogame ads rely heavily upon in-game dialogue and sometimes even ad-specific voiceovers.