I liked it a lot except for the length of time a soul and/or item is able to be picked up. Battles are quite action packed so soul collecting is a bit of a low priority and this can be a bit annoying. I suggest either letting the souls and items remain on the ground without disappearing or giving a skill that mass collect souls in an area but disabling the character for a split second. At least widen the area for soul collecting... it's so small.
I think plane customization would have been better than just outright buying planes.
Also, I think being able to use 2 or more skills at the same time should be allowed since they`re consumables anyway.
I think it`s already a solid game though having random obstacles instead of static one would be more interesting to play. Also, more gas tanks and gas tanks in the air too!
I experienced a bug where my truck got stuck inside a bus and couldn`t move.
Great game and concept, though I think it would be a lot better if it's turn based instead of real time. I don't get to appreciate the evolution system due to the fast paced gameplay.