I was browsing around ZS in the Property section and the Inventory section (the one where you buy stuff, not the one on your profile) and I found that these items could be upgraded. See below: And then I thought, "If they have that feature in Zombie Slayer, then why not have it in the other games?". An example in Viking Clan would look like: I know I'm not the best at editing. And in the Inventory bit (where you purchase stuff): I think you get the idea. The item/property, when levelled up would increase the attack/defense or income, depending on the level of the item, the starting att/def of the item and the starting income (and location) of the property. The cost required would try and suitably match that. Something else would be required, and I would suggest it, if I could think of something. An upgrade time could be applied, (15 mins, 30 mins, etc.) I think this would benefit players of all levels as they would be able to increase their income. Opinions, anyone?