Hashiwokakero game implemented in HTML5 allows players to connect islands with bridges according to specific rules. Each island has a number indicating the total bridges connected to it. Bridges can only be placed vertically or horizontally between two islands, with a maximum of two bridges per connection. The goal is to connect all islands complying with these constraints, creating a complete network. This setup can be embedded into websites for free, including ads, with no AI traces. Unique puzzles are generated to ensure variety and challenge, following established gameplay principles.