K I played to day 9 wave something but just let myself get killed as it wasn't getting challenging at all, none of them even got a hit on my cacti, and it just takes too long to kill the cacti. Although the fact I played for so long says something as well, the music is really good, the graphics (especially the title screen) are nice and the controls are intuitive so a really solid entry but would be better if the game was more challenging. :)