Nice little game, not much to see here. Indeed it's pretty repetitive, it only does one thing, but for the price, it's doing it perfectly adequately. The tactical levels are challenging and the normal levels can need some preparation. Yes, you're going to use auto-resolve every time you can for previous levels, so what ? It cuts the grind.

It scratches an itch for specifically that kind of game. If you don't have it, don't buy it.