Fun game !!
but...
The ennemies are stronger and stronger but don't give enough money, I have 6 points of damage on level 4 and cannot kill them as fast as i want. And to get the an another point of damage is too expansive (15000 coins). It's too long to have money with the easier level. And the token are almost useless, useless cabin and useless stickers, and sometimes, rarely, you have a level ups.