Abalone is a strategy game with very simple rules (the tutorial will take about a minute of your time), but is pretty tricky to play. I've never played the physical boardgame before, but this digital version seems solid enough, and in addition to the requisite multiplayer options, has many single-player scenarios to teach you the basics and progressively tougher strategies (I've only played SP so far).
See those screenshots on the store page? That's exactly what the game looks like--no bells and whistles here. I've encountered only one music track so far, and it loops pretty fast, but I just turn it off and play my own music... or have silence if I need to concentrate, which is most of the time ;) The controls are very simple, and there are easy ways to backtrack if you accidentally click on the wrong piece. However, you can really tell this is a port of a game that had touch controls; small things like having to move your cursor all the way to the bottom right corner to finish your turn could have been a bit more streamlined for the PC version.
The big question for single players is: is the AI good? As of now, I'm working through the scenarios to learn the game and the AI is still at the Easy level, but as a complete newbie I find there's still a fair amount of challenge to be had and I'm improving and making steady progress. Would a veteran Abalone player be challenged at more difficult levels? I'm not good enough to judge properly! But for a beginner, the difficulty seems accurate so far.
Just a note for achievement hunters that this game does have achievements, but they appear to be broken.
Abalone is straightforward strategy game that wears its boardgame origins on its sleeve, and has a good amount of content for the Single Player. It may not have any flash, but it's solid.