This was an overall fun game with somewhat frustrating and annoying controls, especially at the end. I actually could not finish the game because of this. Otherwise it is a beautiful and well made game, puzzles are rather simple. You just have to explore every nook and fight with the physics (and controls) until you succeed. It is short, but I was sufficiently entertained regardless of the above-mentioned frustrations, so worth a buy.
The control is easy and smoothy, played from demo time but just remember to buy the full version these days. You can REMAP keys to play comfortable, single hand buty need mouse to aim.
There is a program crash happend in act 2, put ping ball into trash can, when you stand beside can, and launch crawl to the shelf handle, the robot's head and the body break up, and must restart from chkpt. this -1 star, for didn't tested the game.
Bought at $3 (-80%) to have a whole 5 hours gameplay and in one go with 45% achievement compare to average 22%, this is satisfied.
Summary: This is a game about time jump, the author's is fit in science and hyper-science as same as mine, we cannot change the fate, and the author designed a brillient end, which is a "program simulation" and we cannot travel between times on this world. The ending is sudden, the bot findout itself is a program and, credit list. Feeling weird but okay. I won't rate or rate 1 more star if the ending become more rounded.
The game length is just right with this story and operation, too long will cause annoys too.