A few thoughts - Survival mode? Once you have all upgrades at 5 allow them to go higher? Explanation of the various extras (took me a while to figure out miseltoe for example!)
There is a good game in there somewhere (probably 2.5-3/5 right now). Need fixes for some of the graphics (missing cards, generally lacking visuals overall), plus probably some ways to perm up the attack/defense stat, more cash for wins and slightly 'kinder' draws (the last battle is almost impossible without holding out for the deadmans hand for example).
A few issues need fixing but overall quite good:
- pitstop - cars sometimes come out wrong way
- lap counter is wrong
- Spelling in quite a few places
- Car/tires seem to degrade rapidly sometimes for no apparent reason
Overall quite a good