Ichi is a simple looking puzzle game where you guide a yellow ball through a maze with the goal to pass through all the gates before you die. The simple conceit is that you control the maze with only a left-click of the mouse.
There are various elements in the maze, blue triangles that reflect the ball 90° red triangles that also reflect the ball 90° but also rotate 90° with each mouse click, another sort of triangle that can be turned invisible at a click allowing the ball to pass through, objects that are destroyed after a single hit, teleporters, switches and splitters that spit out 2 balls for twice the fun! Every click will change the state of the maze, you can't set and forget, you have to constantly adjust and watch the ball like a hawk.
Though the most important tool is if you click and hold the mouse, you can draw a single use short grey wall where the ball is currently traveling. As you get to the higher level puzzles you will have to reflect the ball multiple times a level to succeed. Whether it's a bug or intended, there is a small but noticeable delay from when you click and hold and where the wall starts and this will have to be taken into account.
The graphics are quite good, the game is presented as though drawn in pen on graph paper though the mobile origins are obvious, giant buttons! Levels range from simplistic to quite challenging and you receive a grade from A to C based on the number of moves, clicks, you make. There is also an easy to use editor and an inbuilt publish and rate system with more that 20000 levels available online!
While there are only 60 official levels, there probably should have been more, in the release and you'll probably be done with those in 2-3 hours, this is a fantastic little puzzler presented with style that's very worthy your time.