Very nice! I love platformers. Not really sure what this has to do with the jam theme but it's cool nonetheless.
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Ah the explanation is on the game's page :) it's supposed to be a post-apocalyptic setting where almost all humans are dead and the character needs to escape through the portal to another dimension for a new beginning, I know it's not so obvious at first by just looking at the environment but it's the best I could do by myself hahaha thank you very much for your comment :)