This is a snapshot of most of what was playable with an Antstream subscription.
Antstream emulates many old systems and they might not be the exact same listings here on Backloggd.

Not here:
Bunny (Spectrum)
Crazy Er-Bert (c64)
Eights (Spectrum)
Paws (Spectrum)
The Egg (Spectrum)

Might be here later:

bombastic / atari 8
bubble+ / amiga
bug's quest for tapes
blow em out
championship baseball / spectrum
crack-up / spectrum
chambers of death / spectrum
crazy castles / spectrum
cops 'n' robbers / c64
cloud 9 / arcade
cameltry / arcade
citadel warrior / atari 8
crazy painter / c64
chaos rising / amstrad
chaos rising ii / amstrad
devon aire in the hidden diamond caper / c64
doombase / spectrum
diamond / spectrum
downtown / spectrum
dartz / spectrum
discovery / c64
diamonds / atari 8
dim x / msx
electra 9000 / spectrum
erik / amiga
eliminator / spectrum (alternative)
earth defense / megadrive (homebrew)
face off ice hockey / amiga
gunfighter / spectrum
globetrotter / c64
globulus / amiga
go to jail / spectrum
grabber / c64
grid trap / spectrum
henry's hoard / spectrum
humm-dinger / c64
hole in one / amiga
hyperblast / atari 8bit
hijack / atari 8bit
hard times / arcade
highway fighter / msx
interalia / spectrum
indoor soccer / spectrum
indigo / amiga
ice slider / amstrad
joyful road / arcade
jewel warehouse / amstrad
killing machine / amiga
kosmos / spectrum
kissin kousins / atari 8b
liberation / arcade
lethal / c64
life-term / spectrum
luna atac / spectrum
lee / c64
metalyx / spectrum
monster munch / c64
mrs mopp / spectrum
mediator / c64
morris meets the bikers / spectrum
metal dragon / msx
molemania / spectrum
nth zone / spectrum
nuclear countdown / spectrum
n.e.i.l. android / spectrum
ocean racer / spectrum
orion / c64
olympimania / spectrum
operation hormuz / spectrum
oceano / amstrad
punch and judy / c64
pro mountain bike simulator / c64
pioneer / spectrum
pro golf / spectrum
pi-eyed / spectrum
pi-balled / spectrum
pi there / spectrum
pimeval man / spectrum
pi in the sky / spectrum
pro golf ii / spectrum
rik the roadie / c64
rollin / c64
run for gold / c64
rune monster / msx
steigar / amiga
slug / spectrum
snodgits / spectrum
soccer challenge / c64
stagecoach / spectrum
superkid / spectrum
superkid in space / spectrum
sea battles / spectrum
super brat / spectrum
sarlmoor / spectrum
seahawk / spectrum
space warrior / spectrum
swettibitz in space / spectrum
snooker / c64 / gremlin
suspicious cargo / amiga
street hassle / c64
stranded / c64
sol-deace / megadrive
sophistry / spectrum
sir lancelot / spectrum
scorpius / c64
sector 88 / msx
tank command / spectrum
thunderhawk / c64
topper the copper / c64
last guardian / atari 8 bit
worm blaster / gameboy
xyphoe's nightmare / -
yellow cab / -
zyron's escape / c64
zodia / c64