I just got a TG-16 tonight

not a bad deal. i could recommend tons of games. here is my review of the tg-16 for a tg/pce website i am currently working on:

TurboGrafx-16: NECs first US console was definately misunderstood in the states. With the popularity of the NES and the upcoming release of the Sega Genesis didn't leave much for the Turbografx-16. Also NEC was very perticular with who was alowed to release games for their console. Not much of a bad idea in my opinion.This gave the TurboGrafx-16 their own catalog of original games that were not available anywhere else.. Some of my recomendations, in no perticular order, are: Air Zonk, Blazing Lazers, Bonk's Adventure, Bonk's Revenge, Bonk 3: Bonk's Big Adventure, Cadash, Cratermaze, Devil's Crush, Jackie Chan's ACtion Kung Fu, Legandary Axe, Legendary Axe II, Military Madness, Neutopia, Neutopia II, Soldier Blade, Somer Assault, Splatterhouse, Super Star Soldier, Tricky Kick, and World Sports Competition. There are other good games and many shooters, I just listed my favorites.
The controller is similar to the NES but the I & II buttons have turbo switches above them, which comes in handy with the shooters. The console only had one controller port so if you wanted to play any 2-4 player games (which there weren't many of) you had to get a turbo tap which allowed up to 4 players at once. There is an expansion port on the back that allowed the connection of a Turbo Booster (allowed for better picture and sound through av connection instead of rf connection), Turbo Booster Plus (same as turbo booster except it had an extra feature that allowed for game saving), or a TurboGrafx-CD (a system upgrade, which will be discussed later).
If you have never played/owned a Turbografx-16 I highly suggest getting one. The Turbografx-16 console can be found easily on EBay for around $25 for the system only and around $50 for a console and some games bundled together. Also keep in mind that a lot of the 'better' games can go for a hefty price. The most expensive game is Magical Chase which can go for upwards of $300. Following in at second is Bonk 3: Bonk's Big Adventure for around $100. And in third is Air Zonk for $50. Those are the main expensive games, the rest can go for $30 or less. There were only 96 games released for this console, (a list is available on the front page). A few converters were made for playing Japanese PC Engine HuCard games on the Turbografx-16, one of those will cost around $100+ on EBay. But it can be well worth it for all the fun games that never saw the light of day in the United States.