TLDR: I recommend this game because it is an old school strategy game with fun mechanics, but suffers from a bad interface and lack of multiplayer. Not recommended for people that don't like hectic and long games against AI opponents.
I own Direct Hit Missile War since 2011 from another distribution platform and asked the dev for a key so I could write a review to give future buyers an impression of the game. This should explain my low play time before writing this lengthy review.
The game is an older real time strategy game about constructing missiles from components to shoot at an enemy base that you need to scout first and then hit structures of strategic value, all the while improving your economy of resource extraction, component production. There is no direct engagement between bases via ground-, air or seatroops, all is done via missiles. It is rather complex, fast paced and fun if you like frantically battling an AI opponent by launching stuff at each others bases, while you try to be faster at improving your economy than the enemy.
Games can drag out for quite some time, but it is possible to save during a mission. Campaign matches do not have story and play rather like a sequence of skirmishes against varying difficulty levels of AI that you can choose 2 of for each match. There are no other game modes as of writing this review.
The economy is somewhat complex, not overly confusing. The amount of resources you require is all gathered into a general centralized storage and from there you can request them for the production of various components for your missiles, which include recon cameras, guidance systems, engines, camoflage coating and payloads. You will need to scan the opponents base for his buildings and try to take out key structures, while potentially protecting your own with Anti Missile Launchers. Resource extraction is done by scanning the minerals in the ground with a drone and then building a refinery on top of it. There you can select a mineral to extract from those that are below the refinery, the more present, the faster it will extract. Construction is done in factories by selecting components and the amount of what you want. Earning money is done by selling excess resources, the money is required to construct additional buildings.
While the game had multiplayer in earlier versions, this was unfortunately scrapped and is gone ever since.
The downside of the game is a rather dated clunky interface (clean, but a bit clumsy to navigate), where you need to use the hotkeys to get real enjoyment out of it in my opinion. There are also problems like resources being sometimes named and sometimes only referred to by icon, which requires you to learn them. The tutorial is also done via help screen messages, not via a dedicated tutorial, so it does not hold your hands as much.
Overall I do recommend the game. Even with the dated interface and the missing multiplayer, the singleplayer skirmishes against the AI are fun, long missions that require your senses to be focused on the objective. Managing to hit key structures in your opponents infrastructure is very satisfying and building various missiles of different qualities and strengths and using them correctly is enjoyable. If you do not like long skirmish missions against an AI, I do not recommend this game. Also if you do not like micromanagement intensive gameplay with not much happening except for when that crucial missile is launched, this game might not be for you.
Personally I hope that the sales of Steam do encourage the developer to maybe bring back multiplayer if possible, which was very fun while it was in the game.