it should be confirmed, but on french manual of BAT 2:
512k chip ram + 512k fast ram: few sounds and slow speed
1 MB Chip RAM: full sound, slow speed
1 MB Chip RAM + 512k Fast: full sound, full speed

Always from manual addendum for Dawn Patrol (i will check very soon):
1 MB of memory run with only df0: (other drives are automatically disabled). More of 1 MB and/or 68020 activate more options:

Land Detail: High/Medium/Low
3D Type: 16/32 Colour
Music: On/Off

Well, with bat 2 i have notice no difference in various config.

With Dawn Patrol yes:
68000:
with 1 MB (512+512) no music (only sound effetcs during the game) and only DF0:
with 1,5 MB (1 + 512) music and sound effects and no problems with DF1:
With 68000 only 16 colour and cannot be change.


68020
with 1,5 MB (1+512), title music, sound effects and other music, 16/32 colour (default high settings and 32 colour)

Syndicate
if you have more than 1MB, some game assets are stored in RAM, reducing loadings (a lot)

Mr Nutz is already in the list, but it's interesting the fact that it could be possible to cache the entire game in RAM, if you have enough, just playing it

same for the Turrican serie

just playing Brian the Lion atm, under emulation
already in the list also this one, btw it's imo interesting the precache method it does use :

if you have 2MB or more, the entire disk 2 is preloaded at boot

but if you have 4,5MB or more, all the three gamedisks will be precached at boot, and the game can be played totally from RAM

Confirmed F/A-18 Interceptor: 512 chip + 512 of any ram enables intro music.

Some versions don't have full sound on 512k (use [cr A-Ha]).
On 512k disable extra drives.

I remember my surprise in 1988 when I finally got my 512KB extension installed, and when booting FA18 suddenly the cool Top Gun theme "remix" started blasting through the speakers

good memories!

Ghosts 'N Goblins - The flier and Last Gamer on YT pointed to there being different versions. Confirmed that the music works on 1mb with the Flashtro ADF.
Last Gamer on YT

The slowdowns are improved in this version but are not completely gone. It seems to run better without the music on 512k, which might indicate that the music routines cause the slowdown.

Added some more additions. Thanks to those finding more games. :D

Just want to say that I've been debating whether to upgrade to a simple ECS Agnus, or splurge on an ACE2b (w/ 2MB chip RAM). This thread tipped the scales in favor of the ACE2b, so thanks for your contribututions everybody! It's cool to read and see that chip RAM is good for things besides Deluxe Paint. :great

'Last Ninja 3 - Users with more than 512KB, assets are stored in RAM for faster load times *CONFIRMED'

just a picky thing about this
seems the game will benefit only with added SLOW ram
no chip or fast

original ipf's tests

Kargon

Kargon

having more than 1MB RAM, the game uses some little better graphics

Just realized I made a little mistake here :) .
With 1MB+ memory, it should be possible to switch from music to sfx (and the other way round) on the fly (by pressing F10). With 0.5MB memory only, doing so requires additional loading (swapping disks). In short, even with plenty of ram, game doesn't allow music & sfx to be played at the same time.

Catch 'em (1992) (Global)
Game assets stored into memory if 1mb is available.

Most of the classic games make the list one way or another, which is pleasing to see. Looking at it quickly, probably 100 non-AGA games that either load faster or play better on an A1200 than a normal 1Mb 68000 system (the Monkey Islands, Settlers, both Dunes, both Strikes, Pinball Fantasies etc). Ideally there would have been more, of course, but its nice that an upgrade rejuvenated your old games as well as opening up new ones.

Thanks for the extra updates folks, list is now updated. :D

@kremiso. Yes, there can quite a few configurations leading to issues with how to catalogue all this stuff.

With 1mb, game enables music and sound (not just music), meaning one can choose between sfx and music, activate both sfx + music and also disable sound, while with 0.5mb there's no sound at all so the options are greyed out.
As a side note, don't know if you've played other iterations of Tetris on the miggy Comrade dirk, but my favorite title music ought to be original Tetris' (Infogrames) :p .

Liberation: Captive 2
I think there was music if you had few Mb's memory

Alien Fires 2199 A.D.
 

I found another one. Info taken from the manual