.S

In .S, a Ludum Dare 42 game, players navigate through levels using arrow keys, WASD, and IJKL, while "r" restarts the level and "z" or space enable or disable the spikes. The objective is to reach the end point without colliding with the spikes, with an increasing level of difficulty and complexity. The game features minimalistic graphics and simple gameplay, providing a challenging and satisfying experience.