How Much Patching Do Games Generally Get?

We're fucked because they break so much with every patch, have a look at the bug reports on EA website, it's not going well.

It's dependent on the game really.

Normal cycle is about a year though some games could get longer cycles depending on the popularity.  Battlefield 4 got support for over 2 years and there are games that have received patches 5 years and even longer after release.

99 bugs in the code
99 bugs in the code
take one down, patch it around

127 bugs in the code

We've never received as many as I'd prefer to see from Bioware.

Really depends.

Depends on who is the developer, depends on if the game is worth the time and effort as if it's doing poorly, why waste time on it when you can work on the next project and hopefully do that one better? It also depends on the schedule. If a company tends to release games every few years, one year will most likely be the time period for the game, if it's games like rockstar where they spend 4-6 years on a game, that game will most likely get years of support (GTA is years old and still gets patches/content at the present). Some games release yearly and those games will really only get half a year of support as they'll move onto the next game that release the following year to support it.

There really is no concrete information to judge how much support a game gets, it all depends on a variety of things. I'd wager andromeda will probably get support for another 6 months to a year before they drop it unless they're wanting to put some focus on the multiplayer.

Both ME3 and DAI got a year of them doing bugfixes and DLC work. So i would say the same for MEA.

Regular updates (1 per month or so) over a year. By march 2018 it's over for Andromeda to get future updates or DLC.

Name the big releases that only needed 1 patch?

Honestly, I don't think I've played a game in over a decade that only needed 1 patch. Or ever really since patching became a thing.

each patch can fix a bug and introduce new bugs
but it's possible to patch the game and let it almost 99.9% bug free
the wicher 3 had more than 10 patches and the latest version has no bugs or any other problem only extremely rare cases

Try playing a Paradox game - their support is second to none.

Most games after launch reduce team size and continue to work on DLC. Witcher 3 did it, DA:I did it. You don't need a full-size team to do SP DLC so most work on other things while a smaller team works on patches, balance, and DLC. That's common game dev practice. Anyone who says different doesn't know what they are taking about.