Bought this game cheaper than dirt and it still wasn't worth it. Absolutely awful. The in-game performance is fine, even on max settings (and it does look fairly nice), but for some reason there's MASSIVE slowdown on the menus - any menu I tried to access was nearly unusable as the game rendered one frame every few seconds.
The controls are awful. I haven't tried it with a controller, but with a keyboard, WASD was a horrible choice. The maps are placed diagonally, yet you move on standard XY axes. The maps aren't even at a 45 degree angle, so you'll have to juggle between one direction and another to travel down, say, a long canal. Also, most "rooms" are small boxes, so you'll have to awkwardly switch from one misaligned direction to another. The developer should have added an option for this control scheme: W - Forward, S - Backward, A & D - Turn left and right, respectively. If I remember right, that's what Battleship: Surface Thunder did, and that game is a hundred times better than this terrible clone.
The game, for the short time I played it, seemed like it had the potential to be fun, but trying to actually play it was such a terrible chore, I decided it really wasn't worth the time to get used to the bad controls or the small amount of space it took up out of 2.5 TB available on my computer. Waste of even 79 cents. If I could go back and stop myself from buying it, I might decide to buy it later on anyway if it went on sale for, say, a penny. Sitting uninstalled in my library, it isn't worth anything anyway, except as a warning to others.