The engine only musters 30 frames per second, lending a distinctly unsmooth look to movement. And to add insult to injury, the game slows down when more than a handful of creatures are in the vincity. This is particularly problematic in the ocean world, where the game is in perpetual slow motion. Sound doesn't fare much better. The music is a mostly forgettable new age affair featuring a mournful piano and random synths.
Sound effects are worse.
Your character's walking sound varies depending on what legs it's sporting, and some of these are just downright grating. Worse, the sound playback system does not seem to precache sounds, leading to a nearly two second freeze whenever a sound effect is first played in a level. Evolution takes an intriguing premise and buries it alive beneath poorly conceived, repetitive gameplay. If you think the game's theme sounds interesting, consider it a renter at best. Badly designed and repetitive gameplay, poor graphics, lame sound.