Use the mouse to play the game. all movemet takes place at the expese of the mouse. You wo't eed ay buttos. Complete the traiig at the begiig of the game to figure out exactly how it works.

Fortress of Sinister is a thrilling 3D strategy game that blends tactical depth with exciting challenges. Lead a team of distinctive characters through four treacherous fortresses teeming with enemies and traps. Take part in strategic turn-based battles on grid-based arenas, recruit unique units like the Mushroom Priest and Night Hunter, and unveil hidden secrets. Collect valuable loot, upgrade your skills, and unlock powerful allies to face escalating challenges and excel in survival mode.

For iOS:
Safari on iOS 8 and later supports WebGL 1.0, and on iOS 15 and later supports WebGL 2.0.

For Android：
Nearly all of them support WebGL