Falcon all the way. #1 worst game on the TG16.
Gunboat at least has some vibrant colors and it's possible to (sort of) figure out the control scheme.
Timeball gets off the hook because it was programmed in 1983 and some puzzle lovers tolerate it.
Ballistix doesn't require any manual reading and it's fifteen minutes of mindless fun for 1 or 2 players before boredom sets in. I imagine it's like Hungry Hungry Hippos, except I've never played Hungry Hungry Hippos.
All of the other games are mediocre to average platformers with the exception of Ghost Manor, which is GOOD if you're not a pussy.