Hi,
Glad that you have tried the game. Actually its very simple, you can travel two days into the past or future from the second dimension, the alternate dimension. In the second dimension, the portal at the left takes you two days into the past, while the one at right takes you two days into the future. There are two different portals in the first dimension (one at right and one at left) that could be used to get into the second dimension and it doesn't make any difference which one you use. You can also interact with people using space key to get clues. Hope it is clear. Yeah, I would like to play yours too!