I thought it'd be kind of fun for people to post reviews of any 7800 homebrews they've purchased. Please join in and post your own reviews.
I'll start with Frenzy, which I purchased very recently from the AtariAge store. Frenzy is the arcade sequel to the Stern classic "Berzerk!" For whatever reason, it wasn't as popular as Berzerk -- probably too similar to the original -- but it was a great game with sweet new features like different robots, bounce shots, and walls that you could shoot out.
PROs
It has speech without need of a pokey chip! Sounds great.
Very faithful to the arcade version of Frenzy
Includes Berzerk. 2 games in 1 cart
2 player modes! Co-op and competitive. Very cool.
Very challenging. I like that a lot, as it makes you want to try "one more time" to beat your last score.
CONs
Slowdowns when there are a lot of objects on the screen.
It's a great game, and one that isn't really available for other systems. The Colecovision has an awesome version of Frenzy, and it's actually even better than this one. Although the CV version doesn't have speech, or Berzerk, or the co-op 2 player modes, I still find the CV version to be more fun. There aren't slow-downs like in this version and there are added fun screen designs not in the arcade version. Also, the CV version is more colorful.
I rate the 7800 version 4 out of 5 stars. A lot of fun.