Like three or more caves had been great. If you start at the first you have to complete it to get to the next level and at the next you can put some challenges in there, "Kill 10 enemies in one run" or something like that. I think it would be better with more upgrades, more levels, and maybe a skill tree. Not that any of you will see this after the next five comments :p
I did it in my first try! Just kidding, my friend did. After I struggled to get almost every upgrade maxed out, there he comes knocking at my door, "Hey, can I play Burrito Bison, its so AWESOME", although he hasnt played it so much. It gets pretty easy after youve bought almost all upgrades! So be warned ... DO NOT LET YOUR FRIENDS PLAY AFTER HOURS OF STRUGGLING!
You know, there were never a "Bloons 2" till' now! Bloons, More Bloons, Even more Bloons, Bloons Tower Defense isnt in this kind of gaming so. Technically it is Weird!
 "Epic War 4"){kind=icon}
 "Flagstaff: Chapter Three"){kind=icon}
 "Cursed Treasure: Level Pack!"){kind=icon}
 "Insectonator"){kind=icon}
 "Trollface Launch"){kind=icon}
 "Jump!"){kind=icon}
 "Notebook Idle"){kind=icon}
 "Another Cave Runner"){kind=icon}
 "Burrito Bison"){kind=icon}
 "Bloons 2"){kind=icon}
 "Rebuild"){kind=icon}
 "Reactance"){kind=icon}
 "Electric Box 2"){kind=icon}
 "Anti-Anti-Idle: The Game"){kind=icon}
 "Flaming Zombooka 2"){kind=icon}
 "Henrik's Halloween"){kind=icon}
 "Simple Tower Defence! 2"){kind=icon}
 "I Am An Insane Rogue AI"){kind=icon}