It's a little bit difficult to change floors in the game, although I think it's my fault. Maybe you could add a tutorial explaining this part. However, it's still a very good game overall, and I even think it has a lot of potential.
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Hey, thanks for playing our game. Yea, the elevator system is a little buggy, and sometimes the THINGs don't want to go up (because they never go down!). Some of the THINGs actions are behavioural based on the mutations, the seeker mutation can help one THING to lead the others to an elevator (they are still a little slow though 😅)