He holds real cash to camera while the image asks if this is real life. The game's world seems to be leaking into an actual street. The 100 days makes it a proper test rather than a sketch, so you click for the how.
How the packaging works
Title
The title sets the 100 day scale inside a game everyone knows.
Thumbnail
The thumbnail shows real cash held to camera, with helicopters and a doubting question behind.
Remix this
Use this when your test blurs two worlds. Hold the proof object to camera, stage the background with cues from the other world, and let a two-word question carry the doubt the viewer already feels.
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