Nearing the end of the cretaceous period, dinosaurs were well evolved and highly civilized, then aliens came to conquer the world. Meet Larry the dinosaur! His world was attacked by aliens, but they failed -- the dinosaurs won. Larry and Steve successfully defeated their leader, Master Xenophobe. A year later, the aliens are back! And they've overrun a heavily secured, 22-story office building. Larry's trapped inside and must explore the various floors and rooms to find key cards and solve puzzles to escape. Take the elevator or parkour up and down the stairs to different levels. Find new weapons. Discover clues. Examine the items in your inventory. Encounter alien creatures and the last surviving dinosaurs. A mystery unfolds as you progress. Larry will uncover the sabotage and intrigue, to reveal the sinister truth of this chaotic event.