The last of us

Pros

Weapon and tool upgrades are nice.
Ducking under low doorways on horseback.

Cons

Melee weapons are as unused when dropped by enemies who just used them on you.
Companions very often get in the way and stand in clear sight in covert situations. (But maybe aren't getting seen)
Companions seem to flip between knowing the terrain and putting Joel in charge of path finding. Joel is the player, who doesn't know the route.
Weapon upgrades infrequent, but probably realistic.
A new trick like sidling along a ledge in Hunter terrain would have been useful in other previous scenarios.

Silly

There are loads of scissors in Boston!
The phrase "we're almost there" seems more for morale than geographical accuracy.
Ammunition is often in short supply but when hanging upsidedown in Bill's trap, Joel seemed to have infinite bullets.
Some dead bodies seem to lie hovering above the terrain.

Bugs

I pushed a tool cart through Ellie.
A Hunter walled through a wall in front of me. Although I was in stealth, he should have seen me as well.

Observations

There was much more emphasis on ducking and crawling earlier in the game.
There are drawers and cupboards everywhere but only a select few are available for opening.
Armoured humvee seemed to get to impossible areas.
A girl's diary chronicles her family's descent into desperation and eventual fleeing of their home including explicit descriptions of leaving town. But the diary was (presumably) found in her bedroom when it should have been wherever she went...unless she ended up in another suburban family house.
Joel's a real arsehole to the girl sometimes. Some people are like that, but can't we be a real hero?
The dartboards in the Irish pub are about 3 feet higher than regulation, but then the dartboard in a deserted suburban American house is about right.
Staggering on broken crockery in the restaurant betrays your location, while walking around on the pool table in a bar up the road doesn't disrupt the balls or make a sound.
Surprising lack of health kits and supplements in the hospital.

GTA5

Pros
Great scenery.

Great falling over.

Great character interaction when meeting coincidentally.

No flying through windows when crashing cars like GTA4. (Aha...you can fly through windows in some crashes...it's just less regular, or due to a more specific set of circumstances)

Stats (stamina etc.) much more realistic  than San Andreas.

Guns not hard to come by.

Amazing ambient city sounds.

Rain sounds on car bodies.

Stair walking more realistic than ever before.

You start with money, an open map, and a large range of cars.

Multi character game managed nicely. I tried to put Trevor and Michael together prematurely but Michael was laying low after the jewellery heist.

Red (blood) tyre tracks :-s

Everything seems to be a proper object. You can knock bags over. You can knock bags out of people hands and knock those bags over. Bits of car which fall off have their own weight and can be moved around.

You can hire cabs. A nice borrow from GTA previous.

Great bleeding in water.

Nice waves crashing against cliffs.

Great underwater scenery.

Cons
Cars change position and colour and sometimes disappear.

Sometimes a lack of car variety regionally (might be intentional)

Blocked areas: tennis coach's house after we pull down the balcony. You can get to the destroyed balcony, but not in the house despite clear space.

No rooftop hidden guns for fun and guaranteed gun locations (more realistic though)(actually, there are hidden weapons, just not conveniently haloed in blue)

As Trevor up north, I saw P2 and tennis on the map. I took a long drive there to find P2 was Franklin's paparazzi mission and obviously unavailable, and the tennis stopped when I arrived, but that was in Michael's back garden, so understandable since that would have really thrown the cat amongst the pigeons.

No rainbows in GTA world.

Turned a car upsidedown attempting a jump in a carpark. I stole a car which was about 10 yards away meaning to use it to try to turn the other car over. When I turned back to the original car, it had gone (didn't realise I could self right a car with left joystick)

Get in the wrong door of the cable car and it won't trigger payment or go anywhere.

Franklin shaved his beard! I didn't tell him to do that!

Something weird about scuba diving controls which I found difficult.

There's a blocked off area of the Los Santos subway under construction. You can climb on top of the obstruction, and there would be room enough to go into the tunnel, but it's magically blocked. Unusual for GTA.

Silly
Barbers can cut hair longer and grow beards.

After completing an off-road race, I paused to send a message (in real life) without pressing X to continue. In the time it took to create and send the message, at least two game days passed and there was a long rain storm. When I eventually pressed X to continue, the off-road groupies gathered at the finish line were still there, as was the dead body of a racer all curled up to his/her crashed autocycle.

'Helping' the police apprehend a criminal will earn you a wanted status as well.

I was a passenger in a cab, watching the world go by while updating this blog. I heard sirens, then a crash, and for some reason then I 'fell' out of the cab and was run over twice and rag-dolled down the road a bit. I stood up and ran back to see what had happened and saw a parked police car and two policemen shooting at a crashed van. The driver got out and was shot dead by one of the cops. I went to get his gun which had fallen into the road. One cop got back in the car and drove off without his mate. The other cop then strolled to the dead van driver next to me and said something like "That'll teach you to fuck with the law!" then turned around and walked straight into the van and stumbled backwards and said "Shit!" then looked at me and said "What you lookin at?!".

I chose the mercy option when disposing of Al DiNapoli, the movie star, for Nigel and his lady friend. I let him out of the boot (trunk) next to the freeway and he gave me $3000. He promptly ran in to traffic and got knocked down and killed. For starters, I might as well have taken the non-merciful option, for seconders, he dropped a further tenner when he got killed! Cheeky git!

Further to that, having seen All DiNapoli run over and killed with my own eyes, a news report said that he was at home alive and well and planning on spinning his ordeal into a money making story!

I sent Chop home from down town and then booted it home in a very fast car to find he'd beaten me home.

I thought I'd found a jump up behind Franklin's safe house in the hills (seems it wasn't), and jumped my car into a swimming pool. Chop was in the car, and he got out, but remained walking around under water despite my efforts to save him. Although he sounded a bit distressed, he was fine. I couldn't get him out though, so I sent him home. Then he was just not there any more. Of course when I got home, there he was.

I startled someone jumping over a fence and they dropped their donut. A close up revealed that a bite had been taken out of it.

While doing the "getting the files back" mission for Martinez, I tried to steal Trevor's truck. That was obviously not allowed during mission play, so I climbed onboard to see where he would go. He refused to move until I got off, delivering the full set of Trevor's driving related tirades, seemingly without taking breath.

Some nice chat on lorry CB radio.

Cool
Lester references GTA4 protagonist, Nico Bellic, before first jewellery heist.

Brilliant how in-car dialogue will pause and/or change for traffic incidents.

Vaporising birdlife in helicopter rotors.

Indeed, if you steal a car pulling a boat on a trailer and drive it into the sea, you can drive the boat away.

Ursula uses meat cleavers for darts! ("Now put the diaper on!")

I retrieved a car from railway lines with the tow truck for Tonya and JB, because it had broken down. When I took it to the garage, I couldn't steal it.

You can do bunny hops and endos on BMXes even though it's never part of the story line. Trevor is remarkably good at it. Even in a frock!

Bugs
Male cop had female voice.

I parked a car in the (empty) Pillbox Hill Garage then selected the car and left. Noticed the car was a different colour, so went back in....2 cars! Chose a car, left, went back, 3 cars! Repeated until the garage was full. Free cars....but then most GTA cars are 'free'.

The container ship 'Ocean Motion's name (painted on the back) flickers when viewed from in the water.

Franklin received a saucy text from Ursula, so I called her. We arranged to meet at the Sandy Shores marina. I was on Del Piero beach so I thought I'd get a cab and skip the ride. When I arrived there, both me and Ursula exited the cab at Sandy Shores, the cab drove off, and she didn't know me.

Since Trevor crashed the train on the bridge, the wreckage has always been there on the tracks. It's solid to my character, but trains drive through it.