Ananachronist

This is another game that would be better off with extensive beta testing.

You have access to three time periods, and items in one period affect items in another, even in reverse form (so changing the future affects the past). There are no NPCs. This general effect can make an incredible game (look at Dual Transform by Plotkin), but this game doesn't help the player narrow down the solution space enough. There are so many actions that could be useful, but only a few are recognized.

Also, the game could be a bit more peppy. Many of the locations are the most generic thing possible in their timeframe.