So, just how big are some games? I asked this question after having played through a bunch of old classic grid-based games. Which is the biggest, i.e. which has the most squares you can step on?

Of course, the numbers may not fully correlate over games, and quality does not equal quantity, but this should give a decent idea of the relative sizes of games.

For number of disks, if a disk contains no functional maps, it is not included in the "# of disks."

Name Outside Towns Dungeons Total Disks Comments
Deathlord 20 at 56x56
62720 35 at 64x64
143360 36 at 64x64
147456 353536 2 The maps aren't as detailed as Ultima V, say, but they still look cool or hide some neat trick. Quantity and quality.
Ultima V 2 at 256x256
131072 66 at 32x32
67584 8 at 8x8 + 121 at 11x11
15153 213809 7 Maps are very detailed, and they needed to use a lot of memory for the NPC's that wandered around. A pretty big game, though.
Demon's Winter 49 at 56x56
153664 N/A 5 at 64x64
20480 174144 4 This game sprawled, and it used compression for its surface maps(0x94 0x70, for instance, meant 0x70 in a row of icon 0x14). It was almost too big to get into, with annoying gameplay and manual combat. Way bigger than the preceding Shard of Spring.
Ultima II 10 at 64x64
40960 15 at 64x64
61440 8 at 16x16x16
32768 135168 3 Pretty big, but a lot of the locations are useless. They went overboard a bit here.
Ultima IV 256x256
65536 16 at 32x32
16384 8 at 8x8 + 121? at 11x11
15153 97073 3 Not bad sized at all.
2400 A.D. 165 at 32x16
84480 N/A N/A 84480 2 This is one of my favorite games because it is so big and still has detail.
Ultima III 1 at 64x64
4096 12 at 64x64
49152 7 at 16x16x8
14336 67584 2 They switched from big maps to neat new features, a good choice.
Ultima I 4 at 84x84
28224 40 at 38x18
27360 36 at 8x8(?)
2304 57888 2 Not bad for a first effort.
Wizard's Crown 8 at 30x30
7200 N/A 12 at 30x30
10800 18000 2 Combat took up a lot of this game's memory. And although it seems small it's quite interesting.
Shard of Spring 120x60 + 64x36
9504 N/A 32 8x32 chunks
8192 17696 2 Written in BASIC. Some dungeon chunks were blank, but this game managed to seem pretty big.
Eternal Dagger 5 at 30x30
4500 N/A 12 at 30x30
10800 15300 2 Actually smaller than its predecessor, Wizard's Crown. But they ironed out some details along the way.

Name	Outside	Towns	Dungeons	Total	Disks	Comments
Deathlord	20 at 56x56 62720	35 at 64x64 143360	36 at 64x64 147456	353536	2	The maps aren't as detailed as Ultima V, say, but they still look cool or hide some neat trick. Quantity and quality.
Ultima V	2 at 256x256 131072	66 at 32x32 67584	8 at 8x8 + 121 at 11x11 15153	213809	7	Maps are very detailed, and they needed to use a lot of memory for the NPC's that wandered around. A pretty big game, though.
Demon's Winter	49 at 56x56 153664	N/A	5 at 64x64 20480	174144	4	This game sprawled, and it used compression for its surface maps(0x94 0x70, for instance, meant 0x70 in a row of icon 0x14). It was almost too big to get into, with annoying gameplay and manual combat. Way bigger than the preceding Shard of Spring.
Ultima II	10 at 64x64 40960	15 at 64x64 61440	8 at 16x16x16 32768	135168	3	Pretty big, but a lot of the locations are useless. They went overboard a bit here.
Ultima IV	256x256 65536	16 at 32x32 16384	8 at 8x8 + 121? at 11x11 15153	97073	3	Not bad sized at all.
2400 A.D.	165 at 32x16 84480	N/A	N/A	84480	2	This is one of my favorite games because it is so big and still has detail.
Ultima III	1 at 64x64 4096	12 at 64x64 49152	7 at 16x16x8 14336	67584	2	They switched from big maps to neat new features, a good choice.
Ultima I	4 at 84x84 28224	40 at 38x18 27360	36 at 8x8(?) 2304	57888	2	Not bad for a first effort.
Wizard's Crown	8 at 30x30 7200	N/A	12 at 30x30 10800	18000	2	Combat took up a lot of this game's memory. And although it seems small it's quite interesting.
Shard of Spring	120x60 + 64x36 9504	N/A	32 8x32 chunks 8192	17696	2	Written in BASIC. Some dungeon chunks were blank, but this game managed to seem pretty big.
Eternal Dagger	5 at 30x30 4500	N/A	12 at 30x30 10800	15300	2	Actually smaller than its predecessor, Wizard's Crown. But they ironed out some details along the way.

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