Team Yofa: Checked on this cache today, and it's indeed missing. There is no free/legal nearby parking as there was when I placed this 15 years ago, so I'm going to say goodbye to this one.
Dr. Flonase and Lucky_Turtle should both change their DNFs into Found logs, as they were in the right place.
As always, I post a full solution when archiving a puzzle. Here's the games in the crossword:
3d: Adventure (Atari, 1980)
13d: Kaboom! (Activision, 1981)
4d: Gorf (Bally Midway, 1981)
6a: Gauntlet (Atari, 1985)
14d: Joust (Williams Electronics, 1982)
17a: Q*bert (Gottlieb, 1982)
11a: Space Invaders (Taito, 1978)
9d: Star Castle (Cinematronics, 1980)
7d: Berzerk (Stern Electronics, 1980)
16a: Boulder Dash (First Star Software, 1984)
1d: Circus (Exidy, 1977)
2a: Galaga (Namco, 1979)
8d: Haunted House (Atari, 1982)
15a: Astrosmash (Mattel, 1982)
12d: Karateka (Broderbund, 1984)
10d: Lode Runner (Broderbund, 1983)
5a: Zork I (Infocom, 1980)