Thankyou so much for this great feedback! Yes I try and always add a leaderboard if I can to my jam games - it really helps to add further motivation to play! I always use LootLocker for the online aspect because I'm familiar with it now.
I did consider implementing a timer for the Joker - however I feel that might have dampened the fear and panic element I was going for when you pick up the card, so I prompted to have a heartbeat that speeds up. From the sound of it this did stress you out, which for me counts as a win hehe.
To be honest I don't play too many card games, I've been playing Balatro recently which is obviously why I made this game haha... but I think youre right that the game needed some more depth and understanding more about card games and their complexities could have helped with this.
Thank you again!