Door Kickers is a great game and has the makings of a great CQB training aid. The survival of your officers is heavily based on your ability to control your tactical angles. Real tactics, techniques, and procedures work (for the most part). As an added bonus, you can create videos of your playthroughs, which you can then edit and use it to help train your team, whether it be a video game clan, paintball, airsoft, or even actual military and law enforcement. By having a clear display of each officer's field of view, you can accurately portray sectors of fire and emphasize an understanding of the importance of angles. Add to this that you can create your own levels with nothing more than some photo editing software, and you have the ability to create any training aid or game level you wish, complex or simple.
Currently, this game is in Alpha. Right now, the game has a feel of many Android or Apple games, with a bunch of sequentially harder scenarios that you attempt to earn three stars on. Time is the primary factor for achieving the three stars, which is somewhat counter to how a SWAT team actually acts. Slow and safe is often preferred to fast and loose. Things have gotten a bit deeper as the game has progressed through its Alpha stage, with the addition of different classes, levels of armor, rank progression of your officers, and training unlocks. Updates have come at a very steady pace, and have consistantly added new great features that make me happy I bought the game.
This game can be as simple or as complex as you want to make it. Do you want to intricately plan out your entire team's movement with go codes and then press play and see what happens? Or do you want to work through the scenario as it plays out, pausing and unpausing to make changes on the fly or control an officer's field of fire directly? Either way works, and it's up to you.
This game is so much fun. You can run through a quick scenario to get your fix, or you can try for the best score on a hard level for hours. With new scenarios being added constantly by the community, and the ability to create random missions from any map, you have an endless amount of replay value.