Refunded in Steam. This could be the quintessential tower defence game; it has depth, variety and strategy. Unfortunately, the RNG hasn't been tuned. This leads to frequent early abandonment or losses, which bloats the playthrough. I enjoyed playing the game and never got frustrated but the balance is swayed in favour of luck a little too much for me to continue the grind. A shame, as it has that bare bones experience that I want from a tower defence.