Are the enemies coming from the sea? cause that would be aces! I'm going to say that they were either way. I actually think this should be more or less the whole concept. I love the idea of a very limited crafting system with waves of enemies (maybe that get increasingly difficult each night cycle, creating a soft time limit) that you have to craft around defeating based on their type. You're simultaneously collecting parts to fix the ship, but the catch is you can only give it enough juice to hop to the next island. Each island has it's own unique flair, and each gets you closer to "getting off this stinkin' rock" or something :) Also I wanted the high ground for fear of an unseen enemy over the ridge, which I thought was a cool feeling for such a small game to give me (and a good way to leverage the island level).
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The enemies are indeed coming from the sea! The enemies do spawn more every night but the increase isn't that big to notice in one or two nights so probably no one will ever notice while actually playing the game, but the system is there and can be tweaked to get better results. I'm glad you enjoyed the game and thanks a lot for the feedback. The different enemy types was something I had in mind but wasn't really possible to do in the limited time. I do plan on expanding the game so stick around if you wish.