Fun little game, great use of the two themes. Both original and a bit tongue-in-cheek.
Clever placement and integration of Language change, is easy to miss though so might be an idea to include it in the game description too. Speaker system could similarly have been used for mute or volume change.
For its simple cleverness throughout I give it a 4,5 it would have been full marks if it had a bit more length or challenge.
PS since you mentioned it was from a jam I searched up a link since you forgot to
https://itch.io/jam/game-gen-game-jam/entries
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One fun little observation: Instead of leaving his world for ours, he might be better off if he puts a nice big bill, or something else light and valuable, where the coin was and reenables the loop again; P
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