Dimensional Key in a Cartoon-Style Video Game

Create a vibrant, cartoon-style illustration of a dimensional key floating in a whimsical video-game world. A gleaming golden key with glowing blue runes and tiny portal-shaped teeth radiates a swirl of multicolored light. Behind the key, a shimmering portal opens to another dimension. The backdrop is a playful platformer landscape with chunky rounded cliffs, floating islands, and friendly cartoon monsters. Render in bold cel-shaded style with thick black outlines, high-contrast lighting, and saturated colors to evoke a modern 3D platformer aesthetic. Subtly include in-game UI hints like a small health bar and inventory slots to emphasize the video-game vibe.