About
UNDERBOX is an endless survival boss rush fangame (a sandbox, kinda). Survive for as long as you can and try to beat your own highscore! UNDERBOX is an UNDERTALE fangame, please play UNDERTALE before considering playing this game. There are seven levels on total and each of them has a monster with different attack patterns. Try to unlock all of them! Play as all soul colors! Also, you now have …
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