Iron Snail really surprised me — in the best way. The visuals are gorgeous, and the tank design gave me strong Metal Slug nostalgia, which I absolutely loved.
The difficulty curve across waves feels just right. The only feature I found myself wanting was the ability to choose upgrades between waves — something like a 'pick one of three' system would add great strategic depth without breaking the flow.
Overall, this is a top tier entry. Really impressive work.