G-LOC is a very interesting game. It's an After Burner spin off, with Yu Suzuki at the helm as usual. It's a first person flight combat game, which is very unique for 1990. And it's one of the lesser known Yu Suzuki games. I had heard that this wasn't very fun, so I decided to see for myself if that was the case. And yeah, it's not very fun indeed.
That being said it's by no means a bad game per say. It's pretty well designed. Visually it's pretty amazing. It's impossible for SEGA AM2 to screw up the visuals. Super Scrolling is as cool as ever. The game can actually be fun. When playing on beginner difficulty. Playing on any other difficulty makes the game not fun. Enemy flight patterns get too hard to catch up to with the games controls. And the amount of junk thrown at me got annoying at points. A general issue the game has is I rarely know what actually did me in. There are times when enemy missiles hit me but I never know before it's too late too dodge. And the the boost feels like it should only really be used when dodging enemies from behind as I otherwise felt no incentive to use it.
I'd only really recommend this to really die hard AM2 fans. Maybe play this if you see it an arcade just for the sake of trying it. Because it certainly is unique. Hell I probably would've enjoyed this more if I did play on an actual arcade board admittedly.