I love this Observation Duty style game the most because of how user friendly it is - the anomaly reporting mechanic is very easy to use, simply clicking on the anomaly. There is no frustration of incorrectly identifying the anomaly type (because of vagueness or too many types to choose from) or forgetting to select the correct camera.
Another reason to love the game is the progression - on each map, you start off with only four cameras and low anomaly spawn, then each difficulty adds a camera and spawn rate. It lets you gradually learn the map, doesn't just overwhelm you from the beginning. It keeps giving you just the right difficulty - challenging to do first try, but not too hard to make you repeat a level often. I have only failed a game maybe two or three times, but I have been just on the verge of failing a lot more times than that (and those runs are the most satisfying).
Additionally, there is a shuffle mode, which randomly assigns you cameras from all the maps. A very unique and fun idea. Depending on your luck with cameras, you can have an easy game or something hellish.
The game also allows you to gain in-game currency by playing games (it's not real money purchase) and you can use it to buy additional packs of anomalies (relatively cheaply as well, you earn enough soon). Another great concept and I hope we will see more anomaly packs added in the future.
The vast majority of anomalies are fairly easy to spot, but there are also a few very sneaky ones that you have to learn to keep an eye on. It's well balanced in this area. The game also tells you what anomalies you missed at the end, which helps out a lot if you kept completely missing something.

Seriously, I have only praise for this game and greatly recommend it to anyone who wants to play a 'spot the difference' game. Absolutely worth the money.

I love this Observation Duty style game the most because of how user friendly it is - the anomaly reporting mechanic is very easy to use, simply clicking on the anomaly. There is no frustration of incorrectly identifying the anomaly type (because of vagueness or too many types to choose from) or forgetting to select the correct camera. Another reason to love the game is the progression - on each map, you start off with only four cameras and low anomaly spawn, then each difficulty adds a camera and spawn rate. It lets you gradually learn the map, doesn't just overwhelm you from the beginning. It keeps giving you just the right difficulty - challenging to do first try, but not too hard to make you repeat a level often. I have only failed a game maybe two or three times, but I have been just on the verge of failing a lot more times than that (and those runs are the most satisfying). Additionally, there is a shuffle mode, which randomly assigns you cameras from all the maps. A very unique and fun idea. Depending on your luck with cameras, you can have an easy game or something hellish. The game also allows you to gain in-game currency by playing games (it's not real money purchase) and you can use it to buy additional packs of anomalies (relatively cheaply as well, you earn enough soon). Another great concept and I hope we will see more anomaly packs added in the future. The vast majority of anomalies are fairly easy to spot, but there are also a few very sneaky ones that you have to learn to keep an eye on. It's well balanced in this area. The game also tells you what anomalies you missed at the end, which helps out a lot if you kept completely missing something. Seriously, I have only praise for this game and greatly recommend it to anyone who wants to play a 'spot the difference' game. Absolutely worth the money.