You step outside into your backyard, the afternoon sun warm on your skin and the scent of freshly cut grass filling your nostrils. Something green catches your eye near the flower bed, glinting strangely in the light. As you approach, you realize it's a small, gelatinous sphere about the size of a baseball, pulsating with an otherworldly inner glow.

The texture looks strangely inviting despite its alien appearance. When you carefully pick it up, it feels cool and slightly sticky against your palm, surprisingly light for its size. A faint humming vibration travels up your arm, making the hairs on your skin stand on end. You glance around, half-expecting someone to appear and explain this oddity, but the yard remains empty.

You hurry back inside, the slime ball cupped gently in your hands, and place it on your desk near the window. As you lean in for a closer look, the green color shifts subtly, almost as if it's watching you back. Your heart races with a mixture of fear and excitement - this is like nothing you've ever seen before. What will you do next?