Limbô.exe

I played this game on my laptop, as per the instructions.

You are shown a desktop web browser screen, with a search tab and an email tab. The search tab shows a few autofill suggestions when you click on the box, but otherwise doesn't seem to do anything even if you type something in the search bar and push enter. The next tab is an email page with two emails, none of which have any controls. One has an .exe file (in game) which you can click to play a maze game. After some stumbling around, I found (Spoiler - click to show)the prize - a string of characters. To find out what this means, look up Base64 decoding. The game doesn't give you any hints on this. It really should have.

If you have difficulty with copy/paste, the characters are (Spoiler - click to show) Q29uZ3JhdCwgeW91IGZpbmlzaGVkIHRoZSBkZW1vIG9mIExpbWLDtCE .

Honestly, the maze controls feel pretty clunky, and I got stuck once when trying to drag the ingame window, where my mouse refused to let it go. It's one of the more interesting things I've seen for the Neo Twiny Jam, although classifying this as IF is pretty tricky.