Based on original work by Tim B. Laursen (see http://overflow.sourceforge.net/), Overflow is a two player board game, released under the CeCILL-V2 license (GPL-compatible) - which basically means that the source code is freely available.
The key principle of the game is that each cell on the board can contain a piece of maximum size 3, and if you increase this size, the piece is distributed, "overflown", on the four neighbouring cells.
- Play against someone else or the computer (6 strength levels).
- Unlimited take back.
- Hinting when playing against the computer.
- Changeable colours.
- Self-adjusting screen layout according to orientation.