Free games released in 1988
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Strip Poker 2
card game / strip poker
Artworx Software
1988NSFW 
Evets
RPG / roguelike
SAck Enterprizes
1988 
Playhouse Strip Poker
card game / strip poker
Eurosoft
1988NSFW 
The Adventures of Captain Comic
platformer / metroidvania
Michael A. Denio
1988 
Kingdom of Kroz
action / maze
Apogee
1988 
Sinbad and the Throne of the Falcon
action / action-adventure
Cinemaware
1988 
Popcorn
action / arcade
Lacral Software
1988