One of the first realistic tactics FPSes
The core of the game is a calculated special ops type first person shooting experience. You are going to be given your main and secondary objectives, infiltration, annihilation, defusing of an explosive device, rescue the civilians, etc, but at another level you are going to be expected to manage your team of brothers in arms as well. Therefore, the game will offer you a combination of on filed tactics, quite simple and robust, which have to do with the positioning of your team members, and the signaling of an attack, breach, cover fire and so on. On the other, you are going to play a stealthy game of shooting, making sure you expose yourself as little as possible while making every bullet count. The 3D engine of the game is pretty impressive, even by today's standards, and thus, you will not feel as if the game does not offer you enough in this department. With a good headphones set you are also going to get audio aid, by better localizing your enemies and thus making your every intervention much more streamlined and precise. Thus, Tom Clancy's Rainbow Six: Rogue Spear, for a game this old remains extremely playable. If you love shooters with a simple tactical overlay, this will do a great job, and I genuinely recommend it.