Concept of changing any number to 7 is pretty fun and creates different ways on how to handle enemies, change prices in shop, increase (or decrease your bonuses) and even increase enemy attack because you pressed to soon attempting to deflect. I like the variety of possibilities and when game can be filled with a lot of ideas based on simple concept and just one game rule. Tried to play in it with touchpad and it was a massacre, things become pretty overwhelming very fast!