Classic PC
CGA
320×200
4 color fixed palettes (4 options)
EGA
320x200
16 color fixed palette
VGA -
MCGA/Mode 13h
MCGA/Mode 13h
320x200
16 or 256 colors from 18-bit RGB
default palette provided
default palette provided
VGA -
QVGA/Mode X
QVGA/Mode X
320x240
256 colors from 18-bit RGB
default palette provided
default palette provided
Amiga
320x200
32 colors from from 12-bit RGB
C64
16-color fixed palette
320x200
2 colors per 8x8px block
160x200
4 colors per 4x8px block (details)
Apple II low-res
40x48
15 color fixed palette
Apple II hi-res
280×192
6 color fixed palette
Consoles
Game Boy
160x144
4-color monochrome / example palette
Game Boy Color
160x144
4 colors per element
effectively 56 colors at a time
chosen from 15-bit RGB
effectively 56 colors at a time
chosen from 15-bit RGB
Pico8
128x128
16 color fixed palette
NES
256x224
SNES
256x224
256 colors chosen from 15-bit RGB,
15 colors on each 8x8
sprite/background element
15 colors on each 8x8
sprite/background element
Nintendo DS
2x256x192
18-bit RGB
Other potential considerations:
Game Boy Advance
(HQVGA)
(HQVGA)
240x160
15-bit RGB
Other named, small resolutions
QCIF
176×144
QQVGA
160x120