Sonic the Hedgehog 1 for SegaCD

2D side-scrolling platform game. Sonic the Hedgehog runs quickly through levels including springs, hills, pits, and loops. Destruction of a robot frees an animal, but isn't required to complete the game. The player must dodge spikes, bottomless holes, moving walls or platforms, and drowning by breathing vent air bubbles. Sonic's major attack is the spin attack, in which he coils up and spins, damaging foes and barriers. Jumping or rolling works.
The player starts with three lives, which can be lost if Sonic collides with adversaries or items without rings, falls off the level screen, or exceeds an act's 10-minute time restriction. Sonic can return to a signpost when he loses a life. Time resets at the checkpoint. If the player has continues, they can return to the beginning of the act with three lives.

Use arrow key and try some key ( Shift, Enter, Z, X, A, S , Q, E, R, T, G, F, H ) to controls the game.