OddEven free(freeware): Free version contains full puzzle generator (sandbox) with all settings except Campaign.
Odd||Even is a math-and-logic based, number placement puzzle similar to Sudoku + Kakuro created by irritatingFLY studio and is their first game.
OddEven-game(with powerful puzzle generator) is lite, casual, features rich Desktop-game with sharp graphics. Its more like feature rich mathematical software with full control given to players. We have focused more on generic side of the game than speed.