Get the Games yes...
but not over STEAM ^^ choose them over GoG.com 
Then at last you re allowed to still OWN them
OT:
TW is not like Dragon Age an it don t have to... in my opinion TW is the best RPG i played so far.
Of course you can t "create" your own char but for TW this does not matter. Story and atmosphere
whise TW1 is the best fucking game out there... and it comes with actual choices they have a
consequense in the game itself and it matters.
Only DEUS EX (org) did the same if i recall right...
I strongly recommend you play TW1 and TW2
and if you wan t read the books
Sorry but this guy play DA:I, that requires Origin. And Steam is not worse than Origin just sayin.
Of course it's better over GoG. I don't know thought how cheap it can get on GoG since I do only know the Steam Sale prices.
Of course I support every anti-DMC-shops and pages. Go GoG!!
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As for The Witcher:
The Witcher is a mature RPG experience where you play as Geralt of Rivia, a Witcher who lost his memory and was found by the fellow Witchers of his Witcher school (the Wolf School).
Witchers are humans who have been raised as monster slayers from their childhood on and put through countless mutations, caused by specific alchemical potions and procedures, which would have killed most other children. Surviving the mutation the Witcher has enhanced senses, can control magic signs and has superhuman reflexes. They often look pale or unhealthy, have cat eyes and Geralt himself (does not happen to all Witchers) lost all the Pigmentation of his hair. Witchers age very slowly and they are stronger than normal human beings, but of course still mortal. Witchers go around the country and eliminate monsters and other problems (sometimes bad humans, though actually they try to stay out of any political matters and stay neutral in those matters. Geralt is an... exception there) for coin. (Most Monsters came to the world summoned by mages from other dimensions).
The Witcher games lead you through a (in TW1 and TW2) mostly linear main storyline and are leading you from one world-hub to the next (with no way of going back) where you can follow the main storyline and also are able to do some side-activities. The main side-activities are monster hunting, where you search for people who need to get rid of a monster (most of the time there is a hangout) and kill this monster or those monsters for them getting paid for it.
But that is not the only thing you do. The Witcher, like most RPGs, is very dialogue heavy. You have a lot of choices throughout the game which are reflected in one or the other way. The difference between TW and other RPGs is here that the Witchers choices do not only have a lot of impact on the game world or your progress in it (in TW1 there is 1 chapter where based on how you decide you will play a small section in a different region supporting different people before the storyline leads to one and the same NEXT world-hub again (if you can follow me). In the Witcher 2 it is even one WHOLE chapter (of 3 chapters that the game has) which you will spend on a completely different place with different quests.
The Witcher (1) has 3 different endings based on the decisions you made but of course has a few more things that are noted in terms of the world state (which will carry over to TW2, but there is nothing big or significant). The endings and/or consequences of your choices are also summarized in a slideshow of still images with voiceover of Geralt at the end of each chapter.
The Witcher 2 has 16 different endings or rather world states. 16 different things that will (probably) carry over to TW3 based on which decision you made. Flashbacks start to tell you about your past as Geralt starts to remember and each chapter is also finished with a slideshow/cinematic/still image series with commentary of one of Geralts companions.
Another difference to other RPGs is the fact that in The Witcher decisions are often not decisions between good and bad, renegade or paragon, gain or loss, it is more about choosing the lesser evil, or about acting upon your OWN sense of justice or about choosing between personal gain or loss and the walfare of others. Geralt often has to make decisions that have consequences on the world state in general or people around him, but also on himself. He often has to think what he wants to happen not being sure of what exactly the consequences are. Those are though decisions. The main sentence that always came up in advertising and CDPRs comments was "There is no good or evil, only choices and consequences". One of the things that definitely makes TW stand out and makes it such a good game.
The world of TW is also not glorious or noble in any way (IMO). It is dark and gritty, often gruel and rude, barbaric and raw. It is in this world that you start to make your journey. A journey of searching for memories, chasing ghosts, following enemies that stole from your Witchers School (/family), and beyond that following your own path of trying to puzzle your live and memories back together.
TW1 and TW2 is mainly about Geralts journey to finding himself again. Of course there are major plot points and story elements I do not want to spoil. TW games play after the books of which some (most) should be available in English by now.
You have your usual RPG stuff like crafting, skill trees, (alchemy,) equipment and monster levels. You will be able to sell/buy stuff during the game, talk to people. You'll have companions once in a while but not as much as in DA or ME and not all the time, since this is not supposed to be a companion game, it's more of a "lone Wolf" journey. But you'll encounter many interesting characters along the way, some of them being the best I have ever seen in RPGs.
Storytelling is really top notch IMO.
Combat is rather clunky in TW1 for me, a lot of mouse-clicking, mid-combat pausing, combat-style changing and stuff. TW2 did that better IMO. Some didn't like the dodge, but that was due to the fact that you had to dodge way too much and that in bossfights there was often not much room to maneuver (IMO) (Should change with TW3). All in all though combat was more fluid, more action-RPG (which I like) and a real challenge even on "normal" difficulty.
What more can I say? You have to learn a lot about the world, but the books should help you. If not, there is still the bestiary which is an in-game database about characters and enemies and monsters you encountered or even some places, potions, etc. Then there is of course the Witcher wiki which is a very good page for any references, but beware the spoilers.
TW3 though - just to say that - wants to change a lot of the formula. TW3 will be multi-region open world, meaning you will be able to travel everywhere at almost any time, you will have fast travel, the world will be huge (bigger than all the world-hubs of TW1 and TW2 combines, bigger than Skyrim), the endings or "world states" will be more (36 I think), the Monsters will not have levels that means if you level is too low and you encounter a monster which is too strong you better run. Also, the time of day an weather will have an effect on the strength and activity of some of the monsters, Geralt will have a horse now (because the world is bigger), the combat is supposed to be more fluid. Furthermore the storyline is supposed to be adapted to the open world which means there will probably - from what I understood - be multiple main storylines which you can all do independently to "put the pieces together" and then, if you have done all of them you those storylines will probably lead to one and the same endgame combining the red lines of the different storylines you finished (if you can follow me).
Well, that is about all I can say.
All in all I like the games very much.
If you like DA and ME but always thought the world could be a little bit darker, the decisions a little bit harder and the protagonist having more character (a real history and a likable (badass) character) then I think you will enjoy the game(s).
