I haven’t gone through all of the responses so maybe someone else has posted the answer.
Decent cell-shaded 3D animations are expensive. Cinema grade animations are in the +$100k/minute range.... with some of it pushing 7 digits a minute.
I have produced some ok-ish quality 2d animation projects and it costs are $2500/min but once you move into 3D it would be a struggle to get it under $10k-20k/minute (Like the trex multiball for jp2).
I’d guess that each game would have 20 to 30 minutes of animation once you factor in attract mode and all of the other modes....