Table:
text: Ghostbusters (franchise)
Other media and merchandise
Video games
Year_ Title System_ Developer Publisher_
1984 Ghostbusters Atari 800, Commodore 64, MSX, ZX Spectrum, Amstrad CPC Activision Activision
1985 Ghostbusters Atari 2600, Apple II Activision Activision
1987 The Real Ghostbusters Arcade Data East Data East
1987 Ghostbusters Sega Master System Activision Sega
1988 Ghostbusters NES Bits Laboratory Activision/Tokuma Shoten
1989 The Real Ghostbusters Commodore 64, Amiga, ZX Spectrum, Amstrad CPC, Atari ST Data East Activision
1989 Ghostbusters II Atari 2600, Amiga, Commodore 64, MSX, PC, ZX Spectrum, Amstrad CPC Activision Activision
1990 Ghostbusters II NES Kemco Activision
1990 Ghostbusters Sega Mega Drive/Genesis Sega Sega
1990 New Ghostbusters 2 Game Boy, NES Hal Laboratory Activision

text: Ghostbusters (franchise)
Other media and merchandise
Video games
Year_ Title System_ Developer Publisher_
1993 The Real Ghostbusters Game Boy Kemco Activision
2009 Ghostbusters: The Video Game PlayStation 3, PlayStation 2, PlayStation Portable, Xbox 360, Nintendo DS, Wii, PC Terminal Reality, Red Fly Studios, Zen Studios Atari, , Sony Computer Entertainment (Europe only, PS2 and PS3 versions)
2011 Ghostbusters: Sanctum of Slime PlayStation Network, Xbox Live, PC Behaviour Interactive Atari
2012 Ghostbusters: Paranormal Blast Android, iOS XMG Studio 
2013 Ghostbusters iOS Beeline Interactive Capcom

Question: Which game was made for Ghostbusters (franchise) in the year before 1994?

Question: How many games were produced for Ghostbusters (franchise) from 1988 to 1993?