awesome demo. I would love to see a dash incorporated starting out. 

the jumping is a deal breaker for me though. I fell into a hole more times than Id like.

love this thank you

ill play around with this thank you!

neat toy I got this error though after messing around. 

runtime error line 522 tab 0
local center = prev_el.x + p

rev_el.width/2

attempt to index local 'prev_el'

(a nil value)

in navigate line 522 (tab 0)

in _update60 line 283 (tab 0)

at line 0 (tab 0)

the game looks clean.
definitely needs some ambient music.
the cards need appropriate sounds once activated. 
a better representation of the enemy encountered would be nice.
a mulligan system to swap out the cards would be neat.
overall its playable.

the file size was a tad large.

can't wait to see more updates.

really neat prototype! I cant wait for the boss music to be put in and a running feature! I also found a bug where I was able to shoot a rocket after killing a grub bug and entering the 3rd or 4th room to the left. 

I love this tool. thank you for making this.