Basilisk is a turn-based game of skill played between two opponents - represented by two basilisks - who battle each other in a unique game play.
The game is played on a board, comprising a grid of cells which each basilisk moves around. At the bottom of the game is a control bar.
You are the topmost basilisk. The default is for your opponent to be played by the computer, but you can press on the head of the opposing basilisk, before you take your first move, to play the two player version.
You can move one cell at a time by pressing the arrow buttons on the control bar, by using the arrow buttons on a keyboard, by clicking on, or touching, an adjacent cell to that of your snake head or by pressing on the edge of the board of the direction you wish to go.
If the adjacent cell to you has a grey, unused body section the basilisk will slither along it to the next free cell, which you can also click on or touch.
Players alternate moves. Only one basilisk will survive. If the head of one basilisk lands on the head of the other, it kills its opponent. If one basilisk has no further space to move in, it dies.
A good strategy is to avoid confrontation initially, and build a series of escape routes and traps.
The game controls on the bottom bar are respectively a skill level toggle with three levels of increasing difficulty, a language toggle, four direction buttons (represented by arrowheads), a settings button, and a reset button - which starts a new game.
You can toggle between the controls bar and the settings bar. The settings options provide buttons respectively to: reset the game to play a two player version, reset the game to play a game with no border, change the colours of the basilisks, mute/unmute sound, provide help, return to the control bar, and reset the game.
In addition to the controls there are a number of keyboard shortcuts and additional features accessible via the board. More details are provided here.