You have 53 of 58 known Atari 7800 (0.999.3 BETA) ROMS

Ace of Aces (1988) (Atari)
Asteroids (1987) (Atari)
Ballblazer (1987) (Atari-Lucasfilm)
Barnyard Blaster (1988) (Atari) [!]
Baseball (1988) (Atari)
Basketbrawl (1990) (Atari)
Centipede (1987) (Atari)
Choplifter (1987) (Atari)
Commando (1989) (Atari)
Crack'ed (1988) (Atari)
Crossbow (1988) (Atari)
Dark Chambers (1988) (Atari)
Desert Falcon (1987) (Atari)
Dig Dug (1987) (Atari)
Donkey Kong (1988) (Atari)
Donkey Kong Jr (1988) (Atari)
F-18 Hornet (1988) (Absolute)
Fatal Run (1990) (Atari)
Fight Night (1988) (Atari)
Food Fight (1987) (Atari)
Galaga (1987) (Atari)
Hat Trick (1987) (Atari)
Ikari Warriors (1989) (Atari)
Jinks (1989) (Atari)
Joust (1987) (Atari)
Karateka (1987) (Atari)
Kung Fu Master (1989) (Absolute) [!]
Mario Brothers (1988) (Atari)
Mat Mania Challenge (1989) (Atari)
Mean 18 Golf (1988) (Atari) [!]
Meltdown (1990) (Atari)
Midnight Mutants (1990) (Atari)
Ms. Pac-Man (1987) (Atari)
Ninja Golf (1990) (Atari)
One-on-One Basketball (1987) (Atari)
Pete Rose Baseball (1989) (Absolute) [!]
Planet Smashers (1990) (Atari)
Pole Position II (1987) (Atari)
Robotron 2084 (1987) (Atari)
Scrapyard Dog (1990) (Atari)
Sentinel (NTSC) (1988) (Atari) [!]
Sentinel (PAL) (1991) (Atari) [!]
Summer Games (1987) (Atari) [!]
Super Huey UH-IX (1989) (Atari)
Super Skateboardin' (1989) (Absolute) [!]
Tank Command (1988) (Froggo) [!]
Title Match Pro Wrestling (1989) (Absolute) [!]
Tomcat - The F-14 (1989) (Absolute) [!]
Touchdown Football (1988) (Atari)
Water Ski (1988) (Froggo)
Winter Games (1987) (Atari) [!]
Xenophobe (1989) (Atari) [!]
Xevious (1987) (Atari)