Witcher 3: 328 points in Gwent with Northern Realms deck (my highscore, hard difficulty)
This game was against Sasha in the High Stakes quest (as she plays with the Niflgaard faction and with NR you can keep exchanging spies and draw your whole deck)
My deck:
Foltest: the siegemaster
all the available hero cards for NR including neutral cards
3x decoy
2x commander's horn
all available spies for NR including Mysterious Elf
3x Crinfrid Reavers Dragon Hunter
3x Blue Stripes Commando
2x Catapult
1x Scorch
1x Villentretenmerth
1x Dunn Banner Medic
My strats with this deck:
-I redraw any duplicate tight bond cards as I'll just draw them with spies for the last round (trying to get more spy cards in my hand)
-Try to win the first round while still using some/all the spies in my hand, but using minimal number of cards (i.e. hero cards with 10 or 15 rating), and decoy as many of their spies as possible
-Pass when I'm way above them and I know I can win the round (often the AI passes because it knows it can't win that round),
-Ideally I'll end up with a few of their spies on my half of the field (their own and/or my spies they've decoyed.
-"Throw" the next round by using Yen/ banner medic to revive spy cards in my discard pile. If the spy cards draw me more spy cards, use those.
-Pass when I've used all the spies and medics to rez spies that I can.
(By this point I've probably drawn my whole deck unless I got lucky with the spies.)
-Tryhard the third round, placing hero cards first as they can't scorch them etc and it's sort of a pass but gaining score (opportunity for them to place their villentretenmerth early)
-As you can see in the video, I baited their scorch cards by using commander's horn on non-tight bond cards.
-Just place every card and get a huge score.