A little too basic. You can beat the game in 10-11 days just by going straight down and buying all the upgrades. The only upgrades you need are speed and duration. I would suggest putting barriers that you have to go around, different upgrades, and adding a few more things to make the game more fun and less boring.
This will be the first BOTD that I don't get in a very long time. Game is absolutely horrible. It is amusing to see the customers bite ranch cups when that's the only thing on the plate though.
 "Warlords: Heroes"){kind=icon}
 "Mole Miner"){kind=icon}
 "Starfighter: Disputed Galaxy"){kind=icon}
 "Papa's Wingeria"){kind=icon}
 "Neon TD"){kind=icon}