http://en.wikipedia.org/wiki/BioShock_Infinite#Sales http://en.wikipedia.org/wiki/BioShock_2#Sales
(Keep in mind this is a semantic distinction, and not a value judgement of the game itself.)
To me, "flop" means it failed to meet the rather ambitious expectations, and instead performed only moderately well.
Many of the games produced are fine games, and some even sell well, but may not match the (possibly extremely overoptimistic) financial forecasts. So, "flop" is probably pejorative. It does fit what the business reaction seems to be to some of these games, but that may be a problem originating with something other than the game.
As others have noted, AAA games are hit-based propositions. You pretty much have a few (3-5) titles that make all of the money each year, another 10 or so that hold the line, and everyone else loses. It's the last group that are flops, the second group are the par result. I think we can safely say that Bioshock Infinite was in the second group...
Source: I bought it on Steam for 8€
Valve gets a 30% slice for distribution on Steam.
I do not know what the breakdown of costs are on consoles, but I assume both Sony and MS still get a cut of the sales.
Consider that the bulk of a game's sales will be realized during the first week, and the rapid time to discount, it's no wonder T2 decided to pull the cord on Irrational Games.
http://www.escapistmagazine.com/videos/view/jimquisition/712...
By comparison, Modern Warfare 3 sold 10m copies on day one.
http://metro.co.uk/2014/01/16/100-best-selling-video-games-o...
Rough outline of the business plan behind most AAA titles:
1. Assume all 10 of us have a >50% chance at being among the year's top 3 sellers.
2. Scale budget according to assumptions from step 1.
http://www.eurogamer.net/articles/2013-03-26-tomb-raider-has...
http://www.escapistmagazine.com/forums/read/7.839763-Tomb-Ra...