Simple and addictive
While the gaming format appears to be simple while being funny at the same time and a mockery of turtles (Squirtle maybe?) it's also a very nice and simple game to keep people entertained for hours. Seriously, buy all the best stuff and get x999 nukes and that turtle is going to be flying for possibly over a trillion miles or more simply because the nuke will give the player a chance to hopefully pick up more ammo as they play.
Getting up and with speaking about the weapons, the slingshot was a nice crap starting weapon since you could hardly do anything with it but as the player gets more money they get better weapons which will keep the turtle in the air for a longer time until eventually they get the golden Gun which quite literally will keep the turtle flying for a long time as well. That and the fact the extra ammo is scattered on the field helps a lot.
The rockets were pretty simple and straightforward.
The cannons were nice and reminded me of kitten cannon except you could get upgrades for it until the player finally ends up with the NG tank which as it says will keep the player amused for a long time, very nice job on that.
Overall the simplicity and the craftiness of the game will keep the player playing for a few hours or a couple of weeks.