EA games: You never get to see what the game is actually like until you play it. All the pictures on the box and on the adverts are just pre-rendered exciting-looking scenes full of units and leaders that don't even exist in the game, all in super-fine quality with HDI lighting and volumetric air.
Bioware: You have to conquer four other civs to win, then take over another fifth, where you discover that Montezuma is building his SoDs with the help of some kind of ancient technology, which you have to destroy (surprise surprise) at the end of the game. If you do nice, ethical things you get light side points, and get to run democracy. If you raze too many cities you get dark side points and are rewarded by unlocking fascism.
Lucas Arts:
You can only move one unit per turn, and when you attack another unit it goes into and FPS mode where you have to run around as one of the soldiers whacking people over the head with your mace. If you whack enough enemies, you get a leader bonus, where you get to run around as your leader, then get shot and killed straight away.
Bungie: They would make Civ 1, and it would be really popular and everybody would love them. Thinking that since they are already the best they don't have to bother any more, they will make two awful sequels. Luckily for them everybody will think the sequels are the best thing since sliced bread, because if the first game was so good, how could the new ones be bad?