This is the type of game I would have spent hours of time and lots of money on in the arcades as a kid. A game similar to Code Name: Viper, called Rolling Thunder, was actually an arcade game, but Code Name: Viper itself was released for the NES.

This is a side scrolling action game where you control "Mr. Smith", a special forces operative who is tasked by "Commander Jones" to take down seven hideouts of a drug syndicate. There is a mystery here to uncover and it reveals itself bit by bit after each stage you complete.

There are two weapons in this game, a pistol and a machine gun. Enemies are mostly syndicate members who are differentiated by color of their outfits. A blue member needs two shots to be killed and can only hit you by running into you, while a pink member can be killed with just one shot, but has a pistol of his own. You only have two lives, at least in the first three levels I've played, so this game can become very tricky real fast.

Not only are just two lives a problem, but you can accidentally run into an enemy that just gets into frame, you can enter a wall (to free hostages) and run into enemies or a bullet right as you exit the wall etc. Expecting a smooth experience I did not, so I'm not surprised that there were some annoyances here.

However, the gameplay loop got me trapped for a few hours anyway and if it weren't for the fact that I will likely play dozens of games like this in the coming days, weeks and months, I wouldn't have minded trying a bit longer to finish. But the game only gets harder from here and looking at a Longplay of it on YT, I doubt I'll get close to the level necessary to play through this.

But definitely worth checking out and would have been a favorite of mine back in the day.