Mondrago

Visit Mondrago on VideoGameGeek, too. The version allows to play the game with two players sharing a mobile phone or tablet device.

Two opponents play on a board with 5 x 5 fields. Each player has 4 pawns. The pawns are aligned on the opposite borders. Both players have a pair of pawns on each side at the beginning of the game.

In alternating manner players move one of their pawns to an empty adjacent field next to it. You can move in any direction: vertically, horizontally, and diagonally, too. Jumping is not possible.

Aim is to build a perfect square with own pawns (while shouting out and announcing MONDRAGO then). These perfect squares can be aligned in parallel to the edge of the board or be diagonally aligned or be oblique aligned as well.

A quite similar game developed independently from Mondrago (1992) is Teeko (1945). It could somehow be called a predecessor maybe...

Another game that fits in that row is Artyom Tchebotaryov's Quartetto (2008). More being a successor although developed independently, too.

Game	Board Size	Pawn moves like...	Winning Condition: Pawns form a...
Mondrago	5x5	King in Chess	rotated and non rotated square (any size)
Teeko	5x5	King in Chess	straight line or non rotated square
Quartetto	8x8	Rook in Chess	rotated square larger than defined minimum size