Monster Racer Rush
Select between 5 monster racers, upgrade your monster skill and win the competition!
4.23 / 5.00 3,881 ViewsBuild and Base
Build most powerful forces, unleash hordes of monster and control your soldiers!
3.93 / 5.00 4,634 ViewsDo you prefer upgrading after every round/wave or do you prefer being able to upgrade at will?
nobody
I think upgrading only after waves makes you carefully decide what you need, because you'll only have another chance to purchase something after the wave.
I'd go with that.