Ok entertainment for the price
Containment: The Zombie Puzzler is a puzzle game with a zombie theme, if it wasn't already obvious.
The game-play at its core is color based, you swap two survivors at a time in order to surround the zombies on the map. Once you surround a zombie, or multiple zombies, with the same color/type of survivor, you kill it. Depending on what kind of zombie it is, that might be it. Also, depending on which type of survivor you kill them with, will give you a chance at a power-up dropping. They vary in use though they are all pretty similar but certain ones are obviously more desirable and the system seems unbalanced at some times. There are around five types of zombies and two boss zombies that you fight more than once. They both pretty much follow the exact same formula to succeed. There are five chapters in each act, for a total of 15 throughout the three acts. There are around five blocks (puzzles) per act. The puzzles do get more difficult as time progresses, but they are still very easy, and restarting them randomizes the block, which can play in your favor. Overall, you will get around 2 hours out of this game if you aren't challenged by it. You can squeeze a little bit more time if you try out the survival mode or go for the steam achievements. The is no replay value in the campaign whatsoever.
The story is pretty standard zombie survival, nothing new, it is delivered via text scrolling by in-between blocks.
The graphics are simple, and the environment is pretty cookie-cutter zombie wasteland though it will change around between acts. The graphics are on par with early smartphone games.
The audio quality was lackluster, one-liners shouted out every time a group of survivors kills a zombie quickly became repetitive and boring. Sound-effects seem to serve their purpose, but aren't anything special.
Overall, I'd say that the game is worth it as a purely time-killer with not much required out of a computer. At 5$ on steam it is around $2.50 per hour of entertainment if you are in to puzzlers.