Like Metaphysik to come before, this game is an action arcade game in which the player balances a ball while moving it through a maze of obstacles toward a goal. This time out, John implements levels larger than the game view window, which makes finding the goal an additional challenge. As the ball is moved, the play field scrolls smoothly both vertically and horizontally. A similar game that uses this technique is Dyson's The Ball Game, which was reviewed here last month.
Controls are the same: use the arrow keys by tapping lightly on them to influence the ball in the direction desired. Avoid walls and moving objects, roll over switches to activate them and open gates.
New to this version, in Gemini, stars exist that change the size of the ball when rolled over: green stars make the ball very small, pink stars make it very large, and blue stars return the ball to its normal medium size.
There is a lot to do in this game, and it will likely keep you busy playing for a long while. The game boasts a hundred different levels split between the two parts, but there are actually many more than that. Many of the levels are very similar, or are duplicates of a previous one. This is especially true towards the end of Gemini. There is still no save feature, and it is sorely needed with a game of this length. Still, if you liked Metaphysik, then you will likely enjoy Andromeda and Gemini, too.
Update: John keeps moving his games around. Now they are located on Newgrounds, and so the above links have been updated accordingly. You will have to click on the "Play Game" button on the NG page to play the game.