Thank you for your feedback... re the upgrades etc do consider I only spent 2 days I had of the jam time to work on the game, and I did it solo too. If I work on the game or a similar game post jam I'll certainly consider in game upgrades or progression. Would have liked to have got a lot more features in but there's a risk reward balance when you are under time pressure to ship something that works compared to breaking things at the last minute and making everyone who plays the game unhappy heh.