BrainTwister Cost: $6 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions BrainTwister: BrainTwister is an original variant of Mastermind, popular logic game, also known as Bulls & Cows. The object of this game is breaking of secret code in the least steps possible. With BrainTwister you can train your logic and deduction or merely enjoy endless game combinations. A unique feature of this game is its fully customizable rules, so you can select from very easy to extremely hard to solve. This offer and this price of BrainTwister are special. You can order 15-Pack via this order form ONLY if you have registered 15-Pack by Sapphire Games.