I'm an old RPG dude who has played most of the existing turn-based RGP titles, as well as many pausable real-time games like the Baldur's Gate series, Knights of the Old Republic, or Neverwinter Nights 1 and 2. Despite the somewhat lackluster 3D face models, this is the game I've always been waiting for without knowing it. The combat mechanics are just brilliant and thanks to the fantastic community-made mods and campaigns I've clocked more than 250 hours now, and I still can't get enough. Sure, the production value of Solasta might not be as high as other more popular similar titles. But frankly, I couldn't motivate myself to finish most of the Larian Studio titles, for example, while I was enjoying every single moment while playing Solasta.
I loved playing this game when it was released many years ago, and I was surprised to see how enjoyable it still is. Especially in combination with the fan made addon / launcher HoMM3 HD you'll get a reasonable screen resolution for modern computers. Kudos to the author! Honestly, I enjoy playing this game much more than more modern titles of the HoMM series which I couldn't bring myself to finish.