& lt;p & gt;Portals Experiment-want to go down in history? Create weapons to create portals and conduct experiments! Use models of people, objects, walls, and special mechanisms to solve all the challenging puzzles. It is impossible to predict how the planned tests will pass, prepare for both good and bad outcomes. Have fun and prove incredible physical theories, immerse yourself in the atmosphere of a smart scientist, choose a place to create and close portals, drop available items into them and watch the results.
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