The original Z... is not this Z. This Z looks right, but plays very wrong. As a result, it can't be recommended.
Z was like the quintessential Real-Time Strategy game... You don't need to build structures or gather resources or such. Instead, you simply capture territories, and you get whatever factories that territory has, and those factories makes the units. There are different units: the grunts, the snipers, and they can capture vehicles, stationary guns, and so on.
Z, when it launched, which was way back in 1996, was a revelation, proving that you don't need to make things too complicated for a fun RTS with bazillion build queues and unit trees and special abilitities, and whatnot. The main draw was the "AI"... If you run a unit next to an empty vehicle, it will "capture" that vehicle. If you put unit next to flag, it will capture the flag without prompting. This severely cuts down on the micro-management, freeing you to allocate the units and coordinate the attacks.
While this game looks like Z, and feels like Z, it doesn't PLAY like Z. The units vary from smart (on the initial levels) to dumb<bleep>. On the early levels they do pick up grenades and vehicles and static guns and flag automatically, but in later levels they simply stop doing so, when those objects are clearly in sensor radius.
The units also get separated easily (when you have a group of 3, they end up widely separated and impossible to cmmand). Inadvertant groups like accidentally grouping a tank and a couple infantry can't be separated, which often result in destruction of empty vehicles, when you clicked on infantry, then empty vehicle to capture it, only to see a vehicle also in the group open fire on the empty vehicle, destroying it.
The game also seem to have lost the ability to scroll with keyboard and/or use more than one mouse button at a time. In fact, this feels like (and probably is) a port of the MOBILE remake of Z, aka "Z Origins"
All in all, this REMAKE of a classic, is not the classic, but a pretender.