Mind Over Marble is a nice puzzle game in which you control a marble and you need to reach the target circle in order to advance to a next level. The levels consist in different types of floating platforms in space, so you need to move the ball along those platforms without falling off them. If you fall off, you will need to start that level from the beginning.
Some platforms are high up or are separated by huge spaces between them, so you need to press the right combination of keys to get to them. Different jumps and additional moves are introduced as you play the game, so the levels will get more and more challenging. On some platforms you will find colored balls, which give you bonus points.
The game includes 20 levels for free and there are lots of marbles that you unlock as you advance. The game supports several resolutions and offers graphics quality settings. In general, the graphics are rather simple on any setting, but still attractive. Sounds, on the other hand, are not very detailed.
To conclude, Mind Over Marble is a challenging and enjoyable puzzle game for children and adults; and being free, it definitely deserves a try.