Thank you for playing! We plan on spicing up the gameplay after the jam, with more upgrades, more unit/enemy types, etc. Wish we could include a couple more in the jam version, but we wanted to keep our scope small for this one :)
Regarding the crabs, I’m not sure about what the issue was. They’re supposed to follow your mouse and bunch up together, and they’re physics-based. We haven’t seen an issue with them getting stuck, but we’ll try to investigate the issue! It would be helpful if you could provide more context and maybe a screenshot, though!
Thank you for the feedback :)